2561677245400 has 96 divisors (see below), whose sum is σ = 7330338015840. Its totient is φ = 810728616960.

The previous prime is 2561677245377. The next prime is 2561677245431. The reversal of 2561677245400 is 45427761652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70357549 + ... + 70393948.

It is an arithmetic number, because the mean of its divisors is an integer number (76357687665).

Almost surely, 2^{2561677245400} is an apocalyptic number.

2561677245400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2561677245400 is an abundant number, since it is smaller than the sum of its proper divisors (4768660770440).

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

2561677245400 is a wasteful number, since it uses less digits than its factorization.

2561677245400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140751533 (or 140751524 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 2561677245400 in words is "two trillion, five hundred sixty-one billion, six hundred seventy-seven million, two hundred forty-five thousand, four hundred".