261656303255350 has 96 divisors (see below), whose sum is σ = 501836742267840. Its totient is φ = 101454173184000.

The previous prime is 261656303255341. The next prime is 261656303255371. The reversal of 261656303255350 is 53552303656162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517951686 + ... + 518456614.

It is an arithmetic number, because the mean of its divisors is an integer number (5227466065290).

Almost surely, 2^{261656303255350} is an apocalyptic number.

261656303255350 is a deficient number, since it is larger than the sum of its proper divisors (240180439012490).

261656303255350 is a wasteful number, since it uses less digits than its factorization.

261656303255350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507466 (or 507461 counting only the distinct ones).

The product of its (nonzero) digits is 14580000, while the sum is 52.

The spelling of 261656303255350 in words is "two hundred sixty-one trillion, six hundred fifty-six billion, three hundred three million, two hundred fifty-five thousand, three hundred fifty".