76631065729 has 4 divisors (see below), whose sum is σ = 78261513984. Its totient is φ = 75000617476.

The previous prime is 76631065711. The next prime is 76631065781. The reversal of 76631065729 is 92756013667.

It is a happy number.

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 not a de Polignac number, because 76631065729 - 2¹⁷ = 76630934657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76631069729) 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, 815224057 + ... + 815224150.

It is an arithmetic number, because the mean of its divisors is an integer number (19565378496).

Almost surely, 2^76631065729 is an apocalyptic number.

It is an amenable number.

76631065729 is a deficient number, since it is larger than the sum of its proper divisors (1630448255).

76631065729 is a wasteful number, since it uses less digits than its factorization.

76631065729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630448254.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 76631065729 in words is "seventy-six billion, six hundred thirty-one million, sixty-five thousand, seven hundred twenty-nine".