261761450432032 has 24 divisors (see below), whose sum is σ = 531966818621952. Its totient is φ = 126658766337600.

The previous prime is 261761450432023. The next prime is 261761450432117. The reversal of 261761450432032 is 230234054167162.

It is a super-2 number, since 2×261761450432032² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131936213944 + ... + 131936215927.

It is an arithmetic number, because the mean of its divisors is an integer number (22165284109248).

Almost surely, 2^{261761450432032} is an apocalyptic number.

It is an amenable number.

261761450432032 is an abundant number, since it is smaller than the sum of its proper divisors (270205368189920).

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

261761450432032 is a wasteful number, since it uses less digits than its factorization.

261761450432032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263872429912 (or 263872429904 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 261761450432032 in words is "two hundred sixty-one trillion, seven hundred sixty-one billion, four hundred fifty million, four hundred thirty-two thousand, thirty-two".