125639160639 has 8 divisors (see below), whose sum is σ = 167532846000. Its totient is φ = 83752457856.

The previous prime is 125639160613. The next prime is 125639160659. The reversal of 125639160639 is 936061936521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125639160639 - 2²⁰ = 125638112063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125639160591 and 125639160600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125639160659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703514 + ... + 1775735.

It is an arithmetic number, because the mean of its divisors is an integer number (20941605750).

Almost surely, 2^125639160639 is an apocalyptic number.

125639160639 is a deficient number, since it is larger than the sum of its proper divisors (41893685361).

125639160639 is a wasteful number, since it uses less digits than its factorization.

125639160639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491289.

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 125639160639 in words is "one hundred twenty-five billion, six hundred thirty-nine million, one hundred sixty thousand, six hundred thirty-nine".