13006647376 has 20 divisors (see below), whose sum is σ = 25202148244. Its totient is φ = 6502867200.

The previous prime is 13006647371. The next prime is 13006647377. The reversal of 13006647376 is 67374660031.

It can be written as a sum of positive squares in 2 ways, for example, as 11380622400 + 1626024976 = 106680^2 + 40324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13006647371) 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, 424906 + ... + 454486.

Almost surely, 2^13006647376 is an apocalyptic number.

13006647376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13006647376 is a deficient number, since it is larger than the sum of its proper divisors (12195500868).

13006647376 is a wasteful number, since it uses less digits than its factorization.

13006647376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57070 (or 57064 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 13006647376 in words is "thirteen billion, six million, six hundred forty-seven thousand, three hundred seventy-six".