204053355540 has 72 divisors (see below), whose sum is σ = 621262965960. Its totient is φ = 54211931904.

The previous prime is 204053355523. The next prime is 204053355547. The reversal of 204053355540 is 45553350402.

204053355540 is a `hidden beast` number, since 20 + 4 + 0 + 53 + 35 + 554 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16630165764 + 187423189776 = 128958^2 + 432924^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 204053355495 and 204053355504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204053355547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2058699 + ... + 2155538.

It is an arithmetic number, because the mean of its divisors is an integer number (8628652305).

Almost surely, 2^204053355540 is an apocalyptic number.

204053355540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204053355540 is an abundant number, since it is smaller than the sum of its proper divisors (417209610420).

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

204053355540 is a wasteful number, since it uses less digits than its factorization.

204053355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4214521 (or 4214516 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 204053355540 in words is "two hundred four billion, fifty-three million, three hundred fifty-five thousand, five hundred forty".