76774441891 has 16 divisors (see below), whose sum is σ = 89815753984. Its totient is φ = 64252639584.

The previous prime is 76774441879. The next prime is 76774441907. The reversal of 76774441891 is 19814447767.

It is not a de Polignac number, because 76774441891 - 2⁷ = 76774441763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76774441091) 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, 798205 + ... + 889201.

It is an arithmetic number, because the mean of its divisors is an integer number (5613484624).

Almost surely, 2^76774441891 is an apocalyptic number.

76774441891 is a deficient number, since it is larger than the sum of its proper divisors (13041312093).

76774441891 is a wasteful number, since it uses less digits than its factorization.

76774441891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93850.

The product of its digits is 9483264, while the sum is 58.

The spelling of 76774441891 in words is "seventy-six billion, seven hundred seventy-four million, four hundred forty-one thousand, eight hundred ninety-one".