127315877899 has 4 divisors (see below), whose sum is σ = 145503860464. Its totient is φ = 109127895336.

The previous prime is 127315877881. The next prime is 127315877911. The reversal of 127315877899 is 998778513721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998778513721 = 167 ⋅5980709663.

It is a cyclic number.

It is not a de Polignac number, because 127315877899 - 2²¹ = 127313780747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127315877839) 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, 9093991272 + ... + 9093991285.

It is an arithmetic number, because the mean of its divisors is an integer number (36375965116).

Almost surely, 2^127315877899 is an apocalyptic number.

127315877899 is a deficient number, since it is larger than the sum of its proper divisors (18187982565).

127315877899 is an equidigital number, since it uses as much as digits as its factorization.

127315877899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187982564.

The product of its digits is 53343360, while the sum is 67.

The spelling of 127315877899 in words is "one hundred twenty-seven billion, three hundred fifteen million, eight hundred seventy-seven thousand, eight hundred ninety-nine".