12777317248 has 32 divisors (see below), whose sum is σ = 25499536920. Its totient is φ = 6377433600.

The previous prime is 12777317197. The next prime is 12777317261. The reversal of 12777317248 is 84271377721.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14323 + ... + 160498.

Almost surely, 2^12777317248 is an apocalyptic number.

It is an amenable number.

12777317248 is a deficient number, since it is larger than the sum of its proper divisors (12722219672).

12777317248 is an equidigital number, since it uses as much as digits as its factorization.

12777317248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175406 (or 175394 counting only the distinct ones).

The product of its digits is 921984, while the sum is 49.

The spelling of 12777317248 in words is "twelve billion, seven hundred seventy-seven million, three hundred seventeen thousand, two hundred forty-eight".