210019957764 has 12 divisors (see below), whose sum is σ = 490046568144. Its totient is φ = 70006652584.

The previous prime is 210019957739. The next prime is 210019957781. The reversal of 210019957764 is 467759910012.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8750831562 + ... + 8750831585.

It is an arithmetic number, because the mean of its divisors is an integer number (40837214012).

Almost surely, 2^210019957764 is an apocalyptic number.

It is an amenable number.

210019957764 is an abundant number, since it is smaller than the sum of its proper divisors (280026610380).

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

210019957764 is a wasteful number, since it uses less digits than its factorization.

210019957764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501663154 (or 17501663152 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 210019957764 in words is "two hundred ten billion, nineteen million, nine hundred fifty-seven thousand, seven hundred sixty-four".