21177465304 has 16 divisors (see below), whose sum is σ = 40676229720. Its totient is φ = 10330470720.

The previous prime is 21177465241. The next prime is 21177465311. The reversal of 21177465304 is 40356477112.

It is a congruent number.

It is an unprimeable number.

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, 32282394 + ... + 32283049.

Almost surely, 2^21177465304 is an apocalyptic number.

It is an amenable number.

21177465304 is a deficient number, since it is larger than the sum of its proper divisors (19498764416).

21177465304 is a wasteful number, since it uses less digits than its factorization.

21177465304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64565490 (or 64565486 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 21177465304 in words is "twenty-one billion, one hundred seventy-seven million, four hundred sixty-five thousand, three hundred four".