142645911577 has 4 divisors (see below), whose sum is σ = 153618674020. Its totient is φ = 131673149136.

The previous prime is 142645911563. The next prime is 142645911581. The reversal of 142645911577 is 775119546241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94202341776 + 48443569801 = 306924^2 + 220099^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142645911577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142645911517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5486381202 + ... + 5486381227.

It is an arithmetic number, because the mean of its divisors is an integer number (38404668505).

Almost surely, 2^142645911577 is an apocalyptic number.

142645911577 is the 218057-th hex number.

It is an amenable number.

142645911577 is a deficient number, since it is larger than the sum of its proper divisors (10972762443).

142645911577 is a wasteful number, since it uses less digits than its factorization.

142645911577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10972762442.

The product of its digits is 2116800, while the sum is 52.

The spelling of 142645911577 in words is "one hundred forty-two billion, six hundred forty-five million, nine hundred eleven thousand, five hundred seventy-seven".