261432072061134 has 32 divisors (see below), whose sum is σ = 564043721028480. Its totient is φ = 80303600681952.

The previous prime is 261432072061117. The next prime is 261432072061169. The reversal of 261432072061134 is 431160270234162.

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, 2854888824 + ... + 2854980395.

It is an arithmetic number, because the mean of its divisors is an integer number (17626366282140).

Almost surely, 2^{261432072061134} is an apocalyptic number.

261432072061134 is an abundant number, since it is smaller than the sum of its proper divisors (302611648967346).

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

261432072061134 is a wasteful number, since it uses less digits than its factorization.

261432072061134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709869824.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 261432072061134 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, seventy-two million, sixty-one thousand, one hundred thirty-four".