1276438893875 has 32 divisors (see below), whose sum is σ = 1609621977600. Its totient is φ = 1010540604000.

The previous prime is 1276438893841. The next prime is 1276438893907. The reversal of 1276438893875 is 5783988346721.

It is a de Polignac number, because none of the positive numbers 2^k-1276438893875 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1276438893799 and 1276438893808.

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, 5285516 + ... + 5521734.

It is an arithmetic number, because the mean of its divisors is an integer number (50300686800).

Almost surely, 2^{1276438893875} is an apocalyptic number.

1276438893875 is a deficient number, since it is larger than the sum of its proper divisors (333183083725).

1276438893875 is a wasteful number, since it uses less digits than its factorization.

1276438893875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236684 (or 236674 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 71.

The spelling of 1276438893875 in words is "one trillion, two hundred seventy-six billion, four hundred thirty-eight million, eight hundred ninety-three thousand, eight hundred seventy-five".