61707881036525 has 24 divisors (see below), whose sum is σ = 78153523640064. Its totient is φ = 48311188856000.

The previous prime is 61707881036447. The next prime is 61707881036537. The reversal of 61707881036525 is 52563018870716.

It is not a de Polignac number, because 61707881036525 - 2¹⁰ = 61707881035501 is a prime.

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, 9340619 + ... + 14514231.

It is an arithmetic number, because the mean of its divisors is an integer number (3256396818336).

Almost surely, 2^{61707881036525} is an apocalyptic number.

It is an amenable number.

61707881036525 is a deficient number, since it is larger than the sum of its proper divisors (16445642603539).

61707881036525 is a wasteful number, since it uses less digits than its factorization.

61707881036525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183821 (or 5183816 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 61707881036525 in words is "sixty-one trillion, seven hundred seven billion, eight hundred eighty-one million, thirty-six thousand, five hundred twenty-five".