127976075893 has 4 divisors (see below), whose sum is σ = 129414009420. Its totient is φ = 126538142368.

The previous prime is 127976075861. The next prime is 127976075923. The reversal of 127976075893 is 398570679721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 398570679721 = 37 ⋅10772180533.

It can be written as a sum of positive squares in 2 ways, for example, as 11682799569 + 116293276324 = 108087^2 + 341018^2 .

It is a cyclic number.

It is not a de Polignac number, because 127976075893 - 2⁵ = 127976075861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127976075813) 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, 718966630 + ... + 718966807.

It is an arithmetic number, because the mean of its divisors is an integer number (32353502355).

Almost surely, 2^127976075893 is an apocalyptic number.

It is an amenable number.

127976075893 is a deficient number, since it is larger than the sum of its proper divisors (1437933527).

127976075893 is an equidigital number, since it uses as much as digits as its factorization.

127976075893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437933526.

The product of its (nonzero) digits is 40007520, while the sum is 64.

The spelling of 127976075893 in words is "one hundred twenty-seven billion, nine hundred seventy-six million, seventy-five thousand, eight hundred ninety-three".