127563340431 has 4 divisors (see below), whose sum is σ = 170084453912. Its totient is φ = 85042226952.

The previous prime is 127563340427. The next prime is 127563340451. The reversal of 127563340431 is 134043365721.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 127563340431 - 2² = 127563340427 is a prime.

It is a super-2 number, since 2×127563340431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127563340431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127563340451) 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, 21260556736 + ... + 21260556741.

It is an arithmetic number, because the mean of its divisors is an integer number (42521113478).

Almost surely, 2^127563340431 is an apocalyptic number.

127563340431 is a deficient number, since it is larger than the sum of its proper divisors (42521113481).

127563340431 is an equidigital number, since it uses as much as digits as its factorization.

127563340431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42521113480.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 127563340431 in words is "one hundred twenty-seven billion, five hundred sixty-three million, three hundred forty thousand, four hundred thirty-one".