12874978065 has 32 divisors (see below), whose sum is σ = 21508736256. Its totient is φ = 6564096000.

The previous prime is 12874978031. The next prime is 12874978073. The reversal of 12874978065 is 56087947821.

It is not a de Polignac number, because 12874978065 - 2¹⁰ = 12874977041 is a prime.

It is a super-2 number, since 2×12874978065² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12874977996 and 12874978014.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602565 + ... + 623565.

It is an arithmetic number, because the mean of its divisors is an integer number (672148008).

Almost surely, 2^12874978065 is an apocalyptic number.

12874978065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12874978065 is a deficient number, since it is larger than the sum of its proper divisors (8633758191).

12874978065 is a wasteful number, since it uses less digits than its factorization.

12874978065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22809.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 12874978065 in words is "twelve billion, eight hundred seventy-four million, nine hundred seventy-eight thousand, sixty-five".