76815163109476 has 81 divisors (see below), whose sum is σ = 154470591550009. Its totient is φ = 33395968830400.

The previous prime is 76815163109449. The next prime is 76815163109533. The reversal of 76815163109476 is 67490136151867.

It is a happy number.

The square root of 76815163109476 is 8764426.

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

It can be written as a sum of positive squares in only one way, i.e., 21337692287076 + 55477470822400 = 4619274^2 + 7448320^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4434790896 + ... + 4434808216.

Almost surely, 2^{76815163109476} is an apocalyptic number.

76815163109476 is the 8764426-th square number.

It is an amenable number.

76815163109476 is an abundant number, since it is smaller than the sum of its proper divisors (77655428440533).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76815163109476 is an equidigital number, since it uses as much as digits as its factorization.

76815163109476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34714 (or 17357 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 64.

The spelling of 76815163109476 in words is "seventy-six trillion, eight hundred fifteen billion, one hundred sixty-three million, one hundred nine thousand, four hundred seventy-six".