125639011366 has 16 divisors (see below), whose sum is σ = 205869337920. Its totient is φ = 57031355880.

The previous prime is 125639011327. The next prime is 125639011397. The reversal of 125639011366 is 663110936521.

It is a happy number.

It is a super-2 number, since 2×125639011366² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3847656 + ... + 3880171.

It is an arithmetic number, because the mean of its divisors is an integer number (12866833620).

Almost surely, 2^125639011366 is an apocalyptic number.

125639011366 is a deficient number, since it is larger than the sum of its proper divisors (80230326554).

125639011366 is a wasteful number, since it uses less digits than its factorization.

125639011366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7728579.

The product of its (nonzero) digits is 174960, while the sum is 43.

Adding to 125639011366 its reverse (663110936521), we get a palindrome (788749947887).

The spelling of 125639011366 in words is "one hundred twenty-five billion, six hundred thirty-nine million, eleven thousand, three hundred sixty-six".