205270399408 has 40 divisors (see below), whose sum is σ = 425739268800. Its totient is φ = 95585315904.

The previous prime is 205270399393. The next prime is 205270399507. The reversal of 205270399408 is 804993072502.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5704366 + ... + 5740237.

It is an arithmetic number, because the mean of its divisors is an integer number (10643481720).

Almost surely, 2^205270399408 is an apocalyptic number.

It is an amenable number.

205270399408 is an abundant number, since it is smaller than the sum of its proper divisors (220468869392).

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

205270399408 is a wasteful number, since it uses less digits than its factorization.

205270399408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11444689 (or 11444683 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 205270399408 in words is "two hundred five billion, two hundred seventy million, three hundred ninety-nine thousand, four hundred eight".