204117292358728 has 64 divisors (see below), whose sum is σ = 437540183136000. Its totient is φ = 87449645766912.

The previous prime is 204117292358711. The next prime is 204117292358747. The reversal of 204117292358728 is 827853292711402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5479198950 + ... + 5479236202.

It is an arithmetic number, because the mean of its divisors is an integer number (6836565361500).

Almost surely, 2^{204117292358728} is an apocalyptic number.

204117292358728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204117292358728 is an abundant number, since it is smaller than the sum of its proper divisors (233422890777272).

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

204117292358728 is a wasteful number, since it uses less digits than its factorization.

204117292358728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67294 (or 67290 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 204117292358728 in words is "two hundred four trillion, one hundred seventeen billion, two hundred ninety-two million, three hundred fifty-eight thousand, seven hundred twenty-eight".