13125688757 has 4 divisors (see below), whose sum is σ = 13167893856. Its totient is φ = 13083483660.

The previous prime is 13125688727. The next prime is 13125688781. The reversal of 13125688757 is 75788652131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75788652131 = 131591 ⋅575941.

It is a cyclic number.

It is not a de Polignac number, because 13125688757 - 2⁸ = 13125688501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13125688699 and 13125688708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125688717) 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, 21102083 + ... + 21102704.

It is an arithmetic number, because the mean of its divisors is an integer number (3291973464).

Almost surely, 2^13125688757 is an apocalyptic number.

It is an amenable number.

13125688757 is a deficient number, since it is larger than the sum of its proper divisors (42205099).

13125688757 is an equidigital number, since it uses as much as digits as its factorization.

13125688757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42205098.

The product of its digits is 2822400, while the sum is 53.

The spelling of 13125688757 in words is "thirteen billion, one hundred twenty-five million, six hundred eighty-eight thousand, seven hundred fifty-seven".