21054860488 has 64 divisors (see below), whose sum is σ = 44375616000. Its totient is φ = 9318758400.

The previous prime is 21054860429. The next prime is 21054860509. The reversal of 21054860488 is 88406845012.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59608 + ... + 213688.

It is an arithmetic number, because the mean of its divisors is an integer number (693369000).

Almost surely, 2^21054860488 is an apocalyptic number.

It is an amenable number.

21054860488 is an abundant number, since it is smaller than the sum of its proper divisors (23320755512).

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

21054860488 is a wasteful number, since it uses less digits than its factorization.

21054860488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154166 (or 154162 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 46.

The spelling of 21054860488 in words is "twenty-one billion, fifty-four million, eight hundred sixty thousand, four hundred eighty-eight".