76669514868769 has 3 divisors (see below), whose sum is σ = 76669523624883. Its totient is φ = 76669506112656.

The previous prime is 76669514868763. The next prime is 76669514868911. The reversal of 76669514868769 is 96786841596667.

The square root of 76669514868769 is 8756113.

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 can be written as a sum of positive squares in only one way, i.e., 73382951968225 + 3286562900544 = 8566385^2 + 1812888^2 .

It is not a de Polignac number, because 76669514868769 - 2¹⁵ = 76669514836001 is a prime.

It is a super-2 number, since 2×76669514868769² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76669514868769.

It is not an unprimeable number, because it can be changed into a prime (76669514868763) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4378057 + ... + 13134169.

It is an arithmetic number, because the mean of its divisors is an integer number (25556507874961).

Almost surely, 2^{76669514868769} is an apocalyptic number.

76669514868769 is the 8756113-rd square number.

76669514868769 is the 4378057-th centered octagonal number.

It is an amenable number.

76669514868769 is a deficient number, since it is larger than the sum of its proper divisors (8756114).

76669514868769 is an frugal number, since it uses more digits than its factorization.

76669514868769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17512226 (or 8756113 counting only the distinct ones).

The product of its digits is 39504568320, while the sum is 88.

The spelling of 76669514868769 in words is "seventy-six trillion, six hundred sixty-nine billion, five hundred fourteen million, eight hundred sixty-eight thousand, seven hundred sixty-nine".