21377077312 has 56 divisors (see below), whose sum is σ = 46868340096. Its totient is φ = 9622407168.

The previous prime is 21377077277. The next prime is 21377077349.

21377077312 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402108 + ... + 452155.

Almost surely, 2^21377077312 is an apocalyptic number.

It is an amenable number.

21377077312 is an abundant number, since it is smaller than the sum of its proper divisors (25491262784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21377077312 is a wasteful number, since it uses less digits than its factorization.

21377077312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854315 (or 854305 counting only the distinct ones).

The product of its (nonzero) digits is 86436, while the sum is 40.

The spelling of 21377077312 in words is "twenty-one billion, three hundred seventy-seven million, seventy-seven thousand, three hundred twelve".