76649412891 has 16 divisors (see below), whose sum is σ = 102623099040. Its totient is φ = 50888048640.

The previous prime is 76649412823. The next prime is 76649412919. The reversal of 76649412891 is 19821494667.

It is not a de Polignac number, because 76649412891 - 2¹¹ = 76649410843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76649412391) 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, 767311 + ... + 861431.

It is an arithmetic number, because the mean of its divisors is an integer number (6413943690).

Almost surely, 2^76649412891 is an apocalyptic number.

76649412891 is a deficient number, since it is larger than the sum of its proper divisors (25973686149).

76649412891 is a wasteful number, since it uses less digits than its factorization.

76649412891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95246.

The product of its digits is 5225472, while the sum is 57.

The spelling of 76649412891 in words is "seventy-six billion, six hundred forty-nine million, four hundred twelve thousand, eight hundred ninety-one".