261727110256344 has 64 divisors (see below), whose sum is σ = 655962037171200. Its totient is φ = 87023289807744.

The previous prime is 261727110256307. The next prime is 261727110256363. The reversal of 261727110256344 is 443652011727162.

It is a congruent number.

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, 22266459 + ... + 31925685.

It is an arithmetic number, because the mean of its divisors is an integer number (10249406830800).

Almost surely, 2^{261727110256344} is an apocalyptic number.

261727110256344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

261727110256344 is an abundant number, since it is smaller than the sum of its proper divisors (394234926914856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261727110256344 is a wasteful number, since it uses less digits than its factorization.

261727110256344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662072 (or 9662068 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 261727110256344 in words is "two hundred sixty-one trillion, seven hundred twenty-seven billion, one hundred ten million, two hundred fifty-six thousand, three hundred forty-four".