13187743478 has 48 divisors (see below), whose sum is σ = 26085694320. Its totient is φ = 4942534464.

The previous prime is 13187743469. The next prime is 13187743501. The reversal of 13187743478 is 87434778131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248201 + ... + 296612.

It is an arithmetic number, because the mean of its divisors is an integer number (543451965).

Almost surely, 2^13187743478 is an apocalyptic number.

13187743478 is a deficient number, since it is larger than the sum of its proper divisors (12897950842).

13187743478 is a wasteful number, since it uses less digits than its factorization.

13187743478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544861 (or 544854 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 53.

The spelling of 13187743478 in words is "thirteen billion, one hundred eighty-seven million, seven hundred forty-three thousand, four hundred seventy-eight".