261432062404326 has 64 divisors (see below), whose sum is σ = 634302404294400. Its totient is φ = 79155873648000.

The previous prime is 261432062404223. The next prime is 261432062404339. The reversal of 261432062404326 is 623404260234162.

261432062404326 is a `hidden beast` number, since 2 + 6 + 1 + 4 + 3 + 206 + 2 + 4 + 0 + 432 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182517796 + ... + 183944583.

It is an arithmetic number, because the mean of its divisors is an integer number (9910975067100).

Almost surely, 2^{261432062404326} is an apocalyptic number.

261432062404326 is an abundant number, since it is smaller than the sum of its proper divisors (372870341890074).

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

261432062404326 is a wasteful number, since it uses less digits than its factorization.

261432062404326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366463602 (or 366463596 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 261432062404326 in words is "two hundred sixty-one trillion, four hundred thirty-two billion, sixty-two million, four hundred four thousand, three hundred twenty-six".