204733457091 has 16 divisors (see below), whose sum is σ = 305490908800. Its totient is φ = 135507033864.

The previous prime is 204733457063. The next prime is 204733457153. The reversal of 204733457091 is 190754337402.

204733457091 is a `hidden beast` number, since 2 + 0 + 4 + 73 + 3 + 4 + 570 + 9 + 1 = 666.

It is not a de Polignac number, because 204733457091 - 2²⁷ = 204599239363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204733457021) 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, 27272221 + ... + 27279726.

It is an arithmetic number, because the mean of its divisors is an integer number (19093181800).

Almost surely, 2^204733457091 is an apocalyptic number.

204733457091 is a deficient number, since it is larger than the sum of its proper divisors (100757451709).

204733457091 is a wasteful number, since it uses less digits than its factorization.

204733457091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54552095 (or 54552089 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 204733457091 in words is "two hundred four billion, seven hundred thirty-three million, four hundred fifty-seven thousand, ninety-one".