2561401233708 has 24 divisors (see below), whose sum is σ = 5976758925312. Its totient is φ = 853778118864.

The previous prime is 2561401233697. The next prime is 2561401233739. The reversal of 2561401233708 is 8073321041652.

It is a super-3 number, since 3×2561401233708³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2561401233708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2304460 + ... + 3230067.

It is an arithmetic number, because the mean of its divisors is an integer number (249031621888).

Almost surely, 2^{2561401233708} is an apocalyptic number.

It is an amenable number.

2561401233708 is an abundant number, since it is smaller than the sum of its proper divisors (3415357691604).

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

2561401233708 is a wasteful number, since it uses less digits than its factorization.

2561401233708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573101 (or 5573099 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 2561401233708 in words is "two trillion, five hundred sixty-one billion, four hundred one million, two hundred thirty-three thousand, seven hundred eight".