142757977770769 has 3 divisors (see below), whose sum is σ = 142757989718907. Its totient is φ = 142757965822632.

The previous prime is 142757977770757. The next prime is 142757977770781. The reversal of 142757977770769 is 967077779757241.

The square root of 142757977770769 is 11948137.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (142757977770757) and next prime (142757977770781).

It can be written as a sum of positive squares in only one way, i.e., 133817351523025 + 8940626247744 = 11567945^2 + 2990088^2 .

It is not a de Polignac number, because 142757977770769 - 2⁷ = 142757977770641 is a prime.

It is a super-2 number, since 2×142757977770769² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142757977770719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5974069 + ... + 17922205.

It is an arithmetic number, because the mean of its divisors is an integer number (47585996572969).

Almost surely, 2^{142757977770769} is an apocalyptic number.

142757977770769 is the 11948137-th square number.

142757977770769 is the 5974069-th centered octagonal number.

It is an amenable number.

142757977770769 is a deficient number, since it is larger than the sum of its proper divisors (11948138).

142757977770769 is an frugal number, since it uses more digits than its factorization.

142757977770769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23896274 (or 11948137 counting only the distinct ones).

The product of its (nonzero) digits is 16009675920, while the sum is 85.

The spelling of 142757977770769 in words is "one hundred forty-two trillion, seven hundred fifty-seven billion, nine hundred seventy-seven million, seven hundred seventy thousand, seven hundred sixty-nine".