127725466631 has 16 divisors (see below), whose sum is σ = 154799011584. Its totient is φ = 102878722944.

The previous prime is 127725466619. The next prime is 127725466669. The reversal of 127725466631 is 136664527721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127725466631 is a prime.

It is a super-2 number, since 2×127725466631² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127725466631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127725466691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758105 + ... + 911138.

It is an arithmetic number, because the mean of its divisors is an integer number (9674938224).

Almost surely, 2^127725466631 is an apocalyptic number.

127725466631 is a deficient number, since it is larger than the sum of its proper divisors (27073544953).

127725466631 is a wasteful number, since it uses less digits than its factorization.

127725466631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669910.

The product of its digits is 2540160, while the sum is 50.

The spelling of 127725466631 in words is "one hundred twenty-seven billion, seven hundred twenty-five million, four hundred sixty-six thousand, six hundred thirty-one".