76756079921 has 8 divisors (see below), whose sum is σ = 77678209224. Its totient is φ = 75836620800.

The previous prime is 76756079879. The next prime is 76756079923. The reversal of 76756079921 is 12997065767.

It can be written as a sum of positive squares in 4 ways, for example, as 6352887025 + 70403192896 = 79705^2 + 265336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76756079921 - 2³⁴ = 59576210737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76756079923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609680 + ... + 724721.

It is an arithmetic number, because the mean of its divisors is an integer number (9709776153).

Almost surely, 2^76756079921 is an apocalyptic number.

It is an amenable number.

76756079921 is a deficient number, since it is larger than the sum of its proper divisors (922129303).

76756079921 is a wasteful number, since it uses less digits than its factorization.

76756079921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335091.

The product of its (nonzero) digits is 10001880, while the sum is 59.

The spelling of 76756079921 in words is "seventy-six billion, seven hundred fifty-six million, seventy-nine thousand, nine hundred twenty-one".