21076256842176 has 56 divisors (see below), whose sum is σ = 58699224110080. Its totient is φ = 6655660054272.

The previous prime is 21076256842153. The next prime is 21076256842229. The reversal of 21076256842176 is 67124865267012.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2888737696 + ... + 2888744991.

Almost surely, 2^{21076256842176} is an apocalyptic number.

It is an amenable number.

21076256842176 is an abundant number, since it is smaller than the sum of its proper divisors (37622967267904).

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

21076256842176 is a wasteful number, since it uses less digits than its factorization.

21076256842176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777482721 (or 5777482711 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 21076256842176 in words is "twenty-one trillion, seventy-six billion, two hundred fifty-six million, eight hundred forty-two thousand, one hundred seventy-six".