204231130556666 has 32 divisors (see below), whose sum is σ = 324452134567440. Its totient is φ = 96083572110336.

The previous prime is 204231130556659. The next prime is 204231130556689. The reversal of 204231130556666 is 666655031132402.

It can be written as a sum of positive squares in 8 ways, for example, as 39000287290441 + 165230843266225 = 6245021^2 + 12854215^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2424670640 + ... + 2424754868.

Almost surely, 2^{204231130556666} is an apocalyptic number.

204231130556666 is a deficient number, since it is larger than the sum of its proper divisors (120221004010774).

204231130556666 is a wasteful number, since it uses less digits than its factorization.

204231130556666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102098.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 204231130556666 in words is "two hundred four trillion, two hundred thirty-one billion, one hundred thirty million, five hundred fifty-six thousand, six hundred sixty-six".