204521015151 has 16 divisors (see below), whose sum is σ = 303139640320. Its totient is φ = 136281848760.

The previous prime is 204521015129. The next prime is 204521015213. The reversal of 204521015151 is 151510125402.

It is a happy number.

204521015151 is a `hidden beast` number, since 2 + 0 + 45 + 2 + 101 + 515 + 1 = 666.

It is not a de Polignac number, because 204521015151 - 2⁶ = 204521015087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204521014151) 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, 1762015 + ... + 1874496.

It is an arithmetic number, because the mean of its divisors is an integer number (18946227520).

Almost surely, 2^204521015151 is an apocalyptic number.

204521015151 is a deficient number, since it is larger than the sum of its proper divisors (98618625169).

204521015151 is a wasteful number, since it uses less digits than its factorization.

204521015151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638603 (or 3638597 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 204521015151 in words is "two hundred four billion, five hundred twenty-one million, fifteen thousand, one hundred fifty-one".