21014774000 has 80 divisors (see below), whose sum is σ = 55433210976. Its totient is φ = 7641728000.

The previous prime is 21014773987. The next prime is 21014774051. The reversal of 21014774000 is 47741012.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 455609 + ... + 499608.

Almost surely, 2^21014774000 is an apocalyptic number.

21014774000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014774000 is an abundant number, since it is smaller than the sum of its proper divisors (34418436976).

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

21014774000 is a wasteful number, since it uses less digits than its factorization.

21014774000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955251 (or 955235 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The spelling of 21014774000 in words is "twenty-one billion, fourteen million, seven hundred seventy-four thousand".