76899994729 has 4 divisors (see below), whose sum is σ = 76979192400. Its totient is φ = 76820797060.

The previous prime is 76899994727. The next prime is 76899994739. The reversal of 76899994729 is 92749999867.

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 76899994729 - 2¹ = 76899994727 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76899994727) 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, 39597379 + ... + 39599320.

It is an arithmetic number, because the mean of its divisors is an integer number (19244798100).

Almost surely, 2^76899994729 is an apocalyptic number.

It is an amenable number.

76899994729 is a deficient number, since it is larger than the sum of its proper divisors (79197671).

76899994729 is an equidigital number, since it uses as much as digits as its factorization.

76899994729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79197670.

The product of its digits is 1111065984, while the sum is 79.

The spelling of 76899994729 in words is "seventy-six billion, eight hundred ninety-nine million, nine hundred ninety-four thousand, seven hundred twenty-nine".