61136106505625 has 20 divisors (see below), whose sum is σ = 76397241822660. Its totient is φ = 48907884480000.

The previous prime is 61136106505619. The next prime is 61136106505687. The reversal of 61136106505625 is 52650560163116.

It can be written as a sum of positive squares in 10 ways, for example, as 45328333647424 + 15807772858201 = 6732632^2 + 3975899^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61136106505625 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61136106505625.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30354965 + ... + 32306285.

It is an arithmetic number, because the mean of its divisors is an integer number (3819862091133).

Almost surely, 2^{61136106505625} is an apocalyptic number.

It is an amenable number.

61136106505625 is a deficient number, since it is larger than the sum of its proper divisors (15261135317035).

61136106505625 is an equidigital number, since it uses as much as digits as its factorization.

61136106505625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001470 (or 2001455 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 61136106505625 in words is "sixty-one trillion, one hundred thirty-six billion, one hundred six million, five hundred five thousand, six hundred twenty-five".