204102572465 has 32 divisors (see below), whose sum is σ = 273236198400. Its totient is φ = 145106710720.

The previous prime is 204102572437. The next prime is 204102572467. The reversal of 204102572465 is 564275201402.

It is not a de Polignac number, because 204102572465 - 2⁸ = 204102572209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204102572467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 405164 + ... + 756546.

It is an arithmetic number, because the mean of its divisors is an integer number (8538631200).

Almost surely, 2^204102572465 is an apocalyptic number.

It is an amenable number.

204102572465 is a deficient number, since it is larger than the sum of its proper divisors (69133625935).

204102572465 is a wasteful number, since it uses less digits than its factorization.

204102572465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351637.

The product of its (nonzero) digits is 134400, while the sum is 38.

Adding to 204102572465 its reverse (564275201402), we get a palindrome (768377773867).

The spelling of 204102572465 in words is "two hundred four billion, one hundred two million, five hundred seventy-two thousand, four hundred sixty-five".