204457264619 has 2 divisors, whose sum is σ = 204457264620. Its totient is φ = 204457264618.

The previous prime is 204457264553. The next prime is 204457264633. The reversal of 204457264619 is 916462754402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204457264619 is a prime.

It is a super-2 number, since 2×204457264619² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (204457266619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102228632309 + 102228632310.

It is an arithmetic number, because the mean of its divisors is an integer number (102228632310).

Almost surely, 2^204457264619 is an apocalyptic number.

204457264619 is a deficient number, since it is larger than the sum of its proper divisors (1).

204457264619 is an equidigital number, since it uses as much as digits as its factorization.

204457264619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 204457264619 in words is "two hundred four billion, four hundred fifty-seven million, two hundred sixty-four thousand, six hundred nineteen".