21870319088 has 20 divisors (see below), whose sum is σ = 42377278008. Its totient is φ = 10934247360.

The previous prime is 21870319087. The next prime is 21870319117. The reversal of 21870319088 is 88091307812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21870319087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167603 + ... + 268013.

Almost surely, 2^21870319088 is an apocalyptic number.

It is an amenable number.

21870319088 is a deficient number, since it is larger than the sum of its proper divisors (20506958920).

21870319088 is a wasteful number, since it uses less digits than its factorization.

21870319088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114032 (or 114026 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 47.

The spelling of 21870319088 in words is "twenty-one billion, eight hundred seventy million, three hundred nineteen thousand, eighty-eight".