204015630540 has 24 divisors (see below), whose sum is σ = 571243765680. Its totient is φ = 54404168128.

The previous prime is 204015630523. The next prime is 204015630551. The reversal of 204015630540 is 45036510402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 204015630498 and 204015630507.

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, 1700130195 + ... + 1700130314.

It is an arithmetic number, because the mean of its divisors is an integer number (23801823570).

Almost surely, 2^204015630540 is an apocalyptic number.

204015630540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204015630540 is an abundant number, since it is smaller than the sum of its proper divisors (367228135140).

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

204015630540 is a wasteful number, since it uses less digits than its factorization.

204015630540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400260521 (or 3400260519 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 204015630540 in words is "two hundred four billion, fifteen million, six hundred thirty thousand, five hundred forty".