204311552120 has 32 divisors (see below), whose sum is σ = 495062608320. Its totient is φ = 75438111360.

The previous prime is 204311552089. The next prime is 204311552131. The reversal of 204311552120 is 21255113402.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 204311552120.

It is a congruent number.

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, 196452896 + ... + 196453935.

It is an arithmetic number, because the mean of its divisors is an integer number (15470706510).

Almost surely, 2^204311552120 is an apocalyptic number.

204311552120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204311552120 is an abundant number, since it is smaller than the sum of its proper divisors (290751056200).

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

204311552120 is a wasteful number, since it uses less digits than its factorization.

204311552120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392906855 (or 392906851 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 204311552120 its reverse (21255113402), we get a palindrome (225566665522).

The spelling of 204311552120 in words is "two hundred four billion, three hundred eleven million, five hundred fifty-two thousand, one hundred twenty".