261043580366504 has 48 divisors (see below), whose sum is σ = 547100307861120. Its totient is φ = 116595147539520.

The previous prime is 261043580366467. The next prime is 261043580366533. The reversal of 261043580366504 is 405663085340162.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3114144722 + ... + 3114228545.

It is an arithmetic number, because the mean of its divisors is an integer number (11397923080440).

Almost surely, 2^{261043580366504} is an apocalyptic number.

It is an amenable number.

261043580366504 is an abundant number, since it is smaller than the sum of its proper divisors (286056727494616).

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

261043580366504 is a wasteful number, since it uses less digits than its factorization.

261043580366504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6228373330 (or 6228373313 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 261043580366504 in words is "two hundred sixty-one trillion, forty-three billion, five hundred eighty million, three hundred sixty-six thousand, five hundred four".