2561413982131 has 4 divisors (see below), whose sum is σ = 2561418333000. Its totient is φ = 2561409631264.

The previous prime is 2561413982129. The next prime is 2561413982213. The reversal of 2561413982131 is 1312893141652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2561413982131 - 2¹ = 2561413982129 is a prime.

It is a super-2 number, since 2×2561413982131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2561413932131) 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, 1122481 + ... + 2526418.

It is an arithmetic number, because the mean of its divisors is an integer number (640354583250).

Almost surely, 2^{2561413982131} is an apocalyptic number.

2561413982131 is a deficient number, since it is larger than the sum of its proper divisors (4350869).

2561413982131 is an equidigital number, since it uses as much as digits as its factorization.

2561413982131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350868.

The product of its digits is 311040, while the sum is 46.

The spelling of 2561413982131 in words is "two trillion, five hundred sixty-one billion, four hundred thirteen million, nine hundred eighty-two thousand, one hundred thirty-one".