76520834661 has 16 divisors (see below), whose sum is σ = 105775508160. Its totient is φ = 49170007680.

The previous prime is 76520834629. The next prime is 76520834671. The reversal of 76520834661 is 16643802567.

It is not a de Polignac number, because 76520834661 - 2⁵ = 76520834629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76520834661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76520834671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3737506 + ... + 3757923.

It is an arithmetic number, because the mean of its divisors is an integer number (6610969260).

Almost surely, 2^76520834661 is an apocalyptic number.

It is an amenable number.

76520834661 is a deficient number, since it is larger than the sum of its proper divisors (29254673499).

76520834661 is a wasteful number, since it uses less digits than its factorization.

76520834661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495556.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 76520834661 in words is "seventy-six billion, five hundred twenty million, eight hundred thirty-four thousand, six hundred sixty-one".