21009163062 has 16 divisors (see below), whose sum is σ = 42320617920. Its totient is φ = 6952672392.

The previous prime is 21009163027. The next prime is 21009163081. The reversal of 21009163062 is 26036190012.

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, 12594588 + ... + 12596255.

It is an arithmetic number, because the mean of its divisors is an integer number (2645038620).

Almost surely, 2^21009163062 is an apocalyptic number.

21009163062 is an abundant number, since it is smaller than the sum of its proper divisors (21311454858).

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

21009163062 is a wasteful number, since it uses less digits than its factorization.

21009163062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25190987.

The product of its (nonzero) digits is 3888, while the sum is 30.

The spelling of 21009163062 in words is "twenty-one billion, nine million, one hundred sixty-three thousand, sixty-two".