204116022154640 has 80 divisors (see below), whose sum is σ = 490010839013376. Its totient is φ = 78991301184000.

The previous prime is 204116022154613. The next prime is 204116022154657. The reversal of 204116022154640 is 46451220611402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 204116022154594 and 204116022154603.

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, 1940792 + ... + 20297751.

Almost surely, 2^{204116022154640} is an apocalyptic number.

204116022154640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204116022154640 is an abundant number, since it is smaller than the sum of its proper divisors (285894816858736).

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

204116022154640 is a wasteful number, since it uses less digits than its factorization.

204116022154640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22242288 (or 22242282 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 204116022154640 in words is "two hundred four trillion, one hundred sixteen billion, twenty-two million, one hundred fifty-four thousand, six hundred forty".