21076255056 has 40 divisors (see below), whose sum is σ = 54467798560. Its totient is φ = 7022733696.

The previous prime is 21076255051. The next prime is 21076255111. The reversal of 21076255056 is 65055267012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21076255051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45066 + ... + 210198.

It is an arithmetic number, because the mean of its divisors is an integer number (1361694964).

Almost surely, 2^21076255056 is an apocalyptic number.

It is an amenable number.

21076255056 is an abundant number, since it is smaller than the sum of its proper divisors (33391543504).

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

21076255056 is a wasteful number, since it uses less digits than its factorization.

21076255056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167803 (or 167797 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 21076255056 in words is "twenty-one billion, seventy-six million, two hundred fifty-five thousand, fifty-six".