76057652621 has 4 divisors (see below), whose sum is σ = 78113264892. Its totient is φ = 74002040352.

The previous prime is 76057652611. The next prime is 76057652717. The reversal of 76057652621 is 12625675067.

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 69627376900 + 6430275721 = 263870^2 + 80189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76057652621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76057652611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027806080 + ... + 1027806153.

It is an arithmetic number, because the mean of its divisors is an integer number (19528316223).

Almost surely, 2^76057652621 is an apocalyptic number.

It is an amenable number.

76057652621 is a deficient number, since it is larger than the sum of its proper divisors (2055612271).

76057652621 is a wasteful number, since it uses less digits than its factorization.

76057652621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055612270.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 76057652621 in words is "seventy-six billion, fifty-seven million, six hundred fifty-two thousand, six hundred twenty-one".