261179061412 has 12 divisors (see below), whose sum is σ = 458689919436. Its totient is φ = 130124798720.

The previous prime is 261179061397. The next prime is 261179061413. The reversal of 261179061412 is 214160971162.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 99361126656 + 161817934756 = 315216^2 + 402266^2 .

It is not an unprimeable number, because it can be changed into a prime (261179061413) 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, 116181733 + ... + 116183980.

It is an arithmetic number, because the mean of its divisors is an integer number (38224159953).

Almost surely, 2^261179061412 is an apocalyptic number.

It is an amenable number.

261179061412 is a deficient number, since it is larger than the sum of its proper divisors (197510858024).

261179061412 is a wasteful number, since it uses less digits than its factorization.

261179061412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232365998 (or 232365996 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 261179061412 in words is "two hundred sixty-one billion, one hundred seventy-nine million, sixty-one thousand, four hundred twelve".