210682872840 has 64 divisors (see below), whose sum is σ = 689507588160. Its totient is φ = 51074635520.

The previous prime is 210682872833. The next prime is 210682872847. The reversal of 210682872840 is 48278286012.

It is an interprime number because it is at equal distance from previous prime (210682872833) and next prime (210682872847).

It is a self number, because there is not a number n which added to its sum of digits gives 210682872840.

It is not an unprimeable number, because it can be changed into a prime (210682872847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79802799 + ... + 79805438.

It is an arithmetic number, because the mean of its divisors is an integer number (10773556065).

Almost surely, 2^210682872840 is an apocalyptic number.

210682872840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210682872840 is an abundant number, since it is smaller than the sum of its proper divisors (478824715320).

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

210682872840 is a wasteful number, since it uses less digits than its factorization.

210682872840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159608262 (or 159608258 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 210682872840 in words is "two hundred ten billion, six hundred eighty-two million, eight hundred seventy-two thousand, eight hundred forty".