127996440731 has 8 divisors (see below), whose sum is σ = 131476596720. Its totient is φ = 124517379168.

The previous prime is 127996440713. The next prime is 127996440779. The reversal of 127996440731 is 137044699721.

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

It is a cyclic number.

It is not a de Polignac number, because 127996440731 - 2¹⁸ = 127996178587 is a prime.

It is a super-2 number, since 2×127996440731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127996440791) 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, 33701 + ... + 507078.

It is an arithmetic number, because the mean of its divisors is an integer number (16434574590).

Almost surely, 2^127996440731 is an apocalyptic number.

127996440731 is a deficient number, since it is larger than the sum of its proper divisors (3480155989).

127996440731 is an equidigital number, since it uses as much as digits as its factorization.

127996440731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547213.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 127996440731 in words is "one hundred twenty-seven billion, nine hundred ninety-six million, four hundred forty thousand, seven hundred thirty-one".