77091264885 has 16 divisors (see below), whose sum is σ = 123610159296. Its totient is φ = 41027296128.

The previous prime is 77091264883. The next prime is 77091264917. The reversal of 77091264885 is 58846219077.

It is not a de Polignac number, because 77091264885 - 2¹ = 77091264883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77091264883) 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, 5495584 + ... + 5509593.

It is an arithmetic number, because the mean of its divisors is an integer number (7725634956).

Almost surely, 2^77091264885 is an apocalyptic number.

It is an amenable number.

77091264885 is a deficient number, since it is larger than the sum of its proper divisors (46518894411).

77091264885 is a wasteful number, since it uses less digits than its factorization.

77091264885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005652.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 77091264885 in words is "seventy-seven billion, ninety-one million, two hundred sixty-four thousand, eight hundred eighty-five".