127909680515 has 4 divisors (see below), whose sum is σ = 153491616624. Its totient is φ = 102327744408.

The previous prime is 127909680487. The next prime is 127909680517. The reversal of 127909680515 is 515086909721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515086909721 = 571 ⋅902078651.

It is a cyclic number.

It is not a de Polignac number, because 127909680515 - 2³⁴ = 110729811331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127909680517) 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, 12790968047 + ... + 12790968056.

It is an arithmetic number, because the mean of its divisors is an integer number (38372904156).

Almost surely, 2^127909680515 is an apocalyptic number.

127909680515 is a deficient number, since it is larger than the sum of its proper divisors (25581936109).

127909680515 is an equidigital number, since it uses as much as digits as its factorization.

127909680515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25581936108.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 127909680515 in words is "one hundred twenty-seven billion, nine hundred nine million, six hundred eighty thousand, five hundred fifteen".