205038668670 has 32 divisors (see below), whose sum is σ = 536828515200. Its totient is φ = 49706343840.

The previous prime is 205038668623. The next prime is 205038668677. The reversal of 205038668670 is 76866830502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205038668677) 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, 310664320 + ... + 310664979.

It is an arithmetic number, because the mean of its divisors is an integer number (16775891100).

Almost surely, 2^205038668670 is an apocalyptic number.

205038668670 is an abundant number, since it is smaller than the sum of its proper divisors (331789846530).

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

205038668670 is a wasteful number, since it uses less digits than its factorization.

205038668670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621329320.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 205038668670 in words is "two hundred five billion, thirty-eight million, six hundred sixty-eight thousand, six hundred seventy".