204721515632 has 80 divisors (see below), whose sum is σ = 446205101760. Its totient is φ = 90503368704.

The previous prime is 204721515631. The next prime is 204721515653. The reversal of 204721515632 is 236515127402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204721515631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58868 + ... + 642579.

It is an arithmetic number, because the mean of its divisors is an integer number (5577563772).

Almost surely, 2^204721515632 is an apocalyptic number.

It is an amenable number.

204721515632 is an abundant number, since it is smaller than the sum of its proper divisors (241483586128).

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

204721515632 is a wasteful number, since it uses less digits than its factorization.

204721515632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701538 (or 701532 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 204721515632 in words is "two hundred four billion, seven hundred twenty-one million, five hundred fifteen thousand, six hundred thirty-two".