261554713125704 has 16 divisors (see below), whose sum is σ = 490415416403820. Its totient is φ = 130777268751360.

The previous prime is 261554713125697. The next prime is 261554713125749. The reversal of 261554713125704 is 407521317455162.

It can be written as a sum of positive squares in 2 ways, for example, as 261309488104900 + 245225020804 = 16165070^2 + 495202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2682392 + ... + 23028344.

Almost surely, 2^{261554713125704} is an apocalyptic number.

It is an amenable number.

261554713125704 is a deficient number, since it is larger than the sum of its proper divisors (228860703278116).

261554713125704 is a wasteful number, since it uses less digits than its factorization.

261554713125704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21952880 (or 21952876 counting only the distinct ones).

The product of its (nonzero) digits is 7056000, while the sum is 53.

The spelling of 261554713125704 in words is "two hundred sixty-one trillion, five hundred fifty-four billion, seven hundred thirteen million, one hundred twenty-five thousand, seven hundred four".