2113645614125 has 16 divisors (see below), whose sum is σ = 2667468276720. Its totient is φ = 1671917420800.

The previous prime is 2113645614121. The next prime is 2113645614137. The reversal of 2113645614125 is 5214165463112.

It can be written as a sum of positive squares in 8 ways, for example, as 1167622880356 + 946022733769 = 1080566^2 + 972637^2 .

It is not a de Polignac number, because 2113645614125 - 2² = 2113645614121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113645614121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94984184 + ... + 95006433.

It is an arithmetic number, because the mean of its divisors is an integer number (166716767295).

Almost surely, 2^{2113645614125} is an apocalyptic number.

2113645614125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2113645614125 is a deficient number, since it is larger than the sum of its proper divisors (553822662595).

2113645614125 is an equidigital number, since it uses as much as digits as its factorization.

2113645614125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189990721 (or 189990711 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 2113645614125 in words is "two trillion, one hundred thirteen billion, six hundred forty-five million, six hundred fourteen thousand, one hundred twenty-five".