76476441696561 has 9 divisors (see below), whose sum is σ = 110466009234841. Its totient is φ = 50984276974212.

The previous prime is 76476441696493. The next prime is 76476441696563. The reversal of 76476441696561 is 16569614467467.

The square root of 76476441696561 is 8745081.

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

76476441696561 is a `hidden beast` number, since 7 + 6 + 4 + 7 + 6 + 44 + 16 + 9 + 6 + 561 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 76476441696561 - 2⁷ = 76476441696433 is a prime.

It is a super-2 number, since 2×76476441696561² (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 76476441696561.

It is not an unprimeable number, because it can be changed into a prime (76476441696563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24777730 + ... + 27692756.

Almost surely, 2^{76476441696561} is an apocalyptic number.

76476441696561 is the 8745081-st square number.

76476441696561 is the 4372541-st centered octagonal number.

It is an amenable number.

76476441696561 is a deficient number, since it is larger than the sum of its proper divisors (33989567538280).

76476441696561 is an frugal number, since it uses more digits than its factorization.

76476441696561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5830060 (or 2915030 counting only the distinct ones).

The product of its digits is 1097349120, while the sum is 72.

The spelling of 76476441696561 in words is "seventy-six trillion, four hundred seventy-six billion, four hundred forty-one million, six hundred ninety-six thousand, five hundred sixty-one".