204619794913 has 16 divisors (see below), whose sum is σ = 212977336320. Its totient is φ = 196349880384.

The previous prime is 204619794901. The next prime is 204619794919. The reversal of 204619794913 is 319497916402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204619794913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204619794919) 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, 17970220 + ... + 17981602.

It is an arithmetic number, because the mean of its divisors is an integer number (13311083520).

Almost surely, 2^204619794913 is an apocalyptic number.

It is an amenable number.

204619794913 is a deficient number, since it is larger than the sum of its proper divisors (8357541407).

204619794913 is a wasteful number, since it uses less digits than its factorization.

204619794913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15168.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 204619794913 in words is "two hundred four billion, six hundred nineteen million, seven hundred ninety-four thousand, nine hundred thirteen".