13992043478 has 16 divisors (see below), whose sum is σ = 24042023424. Its totient is φ = 5982674280.

The previous prime is 13992043459. The next prime is 13992043489. The reversal of 13992043478 is 87434029931.

It is a congruent number.

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, 1153400 + ... + 1165467.

It is an arithmetic number, because the mean of its divisors is an integer number (1502626464).

Almost surely, 2^13992043478 is an apocalyptic number.

13992043478 is a deficient number, since it is larger than the sum of its proper divisors (10049979946).

13992043478 is a wasteful number, since it uses less digits than its factorization.

13992043478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319307.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 13992043478 in words is "thirteen billion, nine hundred ninety-two million, forty-three thousand, four hundred seventy-eight".