261440575104760 has 16 divisors (see below), whose sum is σ = 588241293985800. Its totient is φ = 104576230041888.

The previous prime is 261440575104757. The next prime is 261440575104769. The reversal of 261440575104760 is 67401575044162.

It is a super-2 number, since 2×261440575104760² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261440575104698 and 261440575104707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261440575104769) 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, 3268007188770 + ... + 3268007188849.

Almost surely, 2^{261440575104760} is an apocalyptic number.

261440575104760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261440575104760 is an abundant number, since it is smaller than the sum of its proper divisors (326800718881040).

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

261440575104760 is a wasteful number, since it uses less digits than its factorization.

261440575104760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536014377630 (or 6536014377626 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 261440575104760 in words is "two hundred sixty-one trillion, four hundred forty billion, five hundred seventy-five million, one hundred four thousand, seven hundred sixty".