210002120399968 has 48 divisors (see below), whose sum is σ = 445735779506640. Its totient is φ = 96817193150976.

The previous prime is 210002120399963. The next prime is 210002120399983. The reversal of 210002120399968 is 869993021200012.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002120399963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277909783 + ... + 278664406.

It is an arithmetic number, because the mean of its divisors is an integer number (9286162073055).

Almost surely, 2^{210002120399968} is an apocalyptic number.

It is an amenable number.

210002120399968 is an abundant number, since it is smaller than the sum of its proper divisors (235733659106672).

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

210002120399968 is a wasteful number, since it uses less digits than its factorization.

210002120399968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556575119 (or 556575111 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 210002120399968 in words is "two hundred ten trillion, two billion, one hundred twenty million, three hundred ninety-nine thousand, nine hundred sixty-eight".