261656423410204 has 12 divisors (see below), whose sum is σ = 458273147142384. Its totient is φ = 130721238512384.

The previous prime is 261656423410201. The next prime is 261656423410241. The reversal of 261656423410204 is 402014324656162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261656423410201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26743292677 + ... + 26743302460.

It is an arithmetic number, because the mean of its divisors is an integer number (38189428928532).

Almost surely, 2^{261656423410204} is an apocalyptic number.

It is an amenable number.

261656423410204 is a deficient number, since it is larger than the sum of its proper divisors (196616723732180).

261656423410204 is a wasteful number, since it uses less digits than its factorization.

261656423410204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53486596364 (or 53486596362 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 261656423410204 in words is "two hundred sixty-one trillion, six hundred fifty-six billion, four hundred twenty-three million, four hundred ten thousand, two hundred four".