21313991062 has 32 divisors (see below), whose sum is σ = 39489033024. Its totient is φ = 8401881600.

The previous prime is 21313991053. The next prime is 21313991087. The reversal of 21313991062 is 26019931312.

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 15 ways as a sum of consecutive naturals, for example, 157239 + ... + 259522.

It is an arithmetic number, because the mean of its divisors is an integer number (1234032282).

Almost surely, 2^21313991062 is an apocalyptic number.

21313991062 is a deficient number, since it is larger than the sum of its proper divisors (18175041962).

21313991062 is a wasteful number, since it uses less digits than its factorization.

21313991062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417064.

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 21313991062 in words is "twenty-one billion, three hundred thirteen million, nine hundred ninety-one thousand, sixty-two".