13374681644 has 24 divisors (see below), whose sum is σ = 23999340288. Its totient is φ = 6518368080.

The previous prime is 13374681559. The next prime is 13374681703. The reversal of 13374681644 is 44618647331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3929 + ... + 163599.

It is an arithmetic number, because the mean of its divisors is an integer number (999972512).

Almost surely, 2^13374681644 is an apocalyptic number.

It is an amenable number.

13374681644 is a deficient number, since it is larger than the sum of its proper divisors (10624658644).

13374681644 is a wasteful number, since it uses less digits than its factorization.

13374681644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160205 (or 160203 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The spelling of 13374681644 in words is "thirteen billion, three hundred seventy-four million, six hundred eighty-one thousand, six hundred forty-four".