76931538469 has 4 divisors (see below), whose sum is σ = 76933991680. Its totient is φ = 76929085260.

The previous prime is 76931538457. The next prime is 76931538491. The reversal of 76931538469 is 96483513967.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76931538469 is a prime.

It is a super-2 number, since 2×76931538469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76931538499) 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 3 ways as a sum of consecutive naturals, for example, 1178949 + ... + 1242490.

It is an arithmetic number, because the mean of its divisors is an integer number (19233497920).

Almost surely, 2^76931538469 is an apocalyptic number.

It is an amenable number.

76931538469 is a deficient number, since it is larger than the sum of its proper divisors (2453211).

76931538469 is a wasteful number, since it uses less digits than its factorization.

76931538469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453210.

The product of its digits is 29393280, while the sum is 61.

The spelling of 76931538469 in words is "seventy-six billion, nine hundred thirty-one million, five hundred thirty-eight thousand, four hundred sixty-nine".