210494800656 has 160 divisors (see below), whose sum is σ = 691469076480. Its totient is φ = 60058018944.

The previous prime is 210494800639. The next prime is 210494800673. The reversal of 210494800656 is 656008494012.

210494800656 is a `hidden beast` number, since 2 + 104 + 9 + 480 + 0 + 65 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (210494800639) and next prime (210494800673).

It is a super-2 number, since 2×210494800656² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2150575 + ... + 2246321.

It is an arithmetic number, because the mean of its divisors is an integer number (4321681728).

Almost surely, 2^210494800656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210494800656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345734538240).

210494800656 is an abundant number, since it is smaller than the sum of its proper divisors (480974275824).

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

210494800656 is a wasteful number, since it uses less digits than its factorization.

210494800656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96498 (or 96486 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 210494800656 in words is "two hundred ten billion, four hundred ninety-four million, eight hundred thousand, six hundred fifty-six".