12519095977 has 4 divisors (see below), whose sum is σ = 12519334800. Its totient is φ = 12518857156.

The previous prime is 12519095957. The next prime is 12519096001. The reversal of 12519095977 is 77959091521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77959091521 = 17 ⋅4585828913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12519095977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12519095957) 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, 2863 + ... + 158260.

It is an arithmetic number, because the mean of its divisors is an integer number (3129833700).

Almost surely, 2^12519095977 is an apocalyptic number.

It is an amenable number.

12519095977 is a deficient number, since it is larger than the sum of its proper divisors (238823).

12519095977 is an equidigital number, since it uses as much as digits as its factorization.

12519095977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238822.

The product of its (nonzero) digits is 1786050, while the sum is 55.

The spelling of 12519095977 in words is "twelve billion, five hundred nineteen million, ninety-five thousand, nine hundred seventy-seven".