204245423664 has 40 divisors (see below), whose sum is σ = 538860272640. Its totient is φ = 66633258048.

The previous prime is 204245423573. The next prime is 204245423677. The reversal of 204245423664 is 466324542402.

It is a super-3 number, since 3×204245423664³ (a number of 35 digits) contains 333 as substring.

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, 45264904 + ... + 45269415.

It is an arithmetic number, because the mean of its divisors is an integer number (13471506816).

Almost surely, 2^204245423664 is an apocalyptic number.

204245423664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204245423664 is an abundant number, since it is smaller than the sum of its proper divisors (334614848976).

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

204245423664 is a wasteful number, since it uses less digits than its factorization.

204245423664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90534377 (or 90534371 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 204245423664 in words is "two hundred four billion, two hundred forty-five million, four hundred twenty-three thousand, six hundred sixty-four".