13971994047 has 32 divisors (see below), whose sum is σ = 22652386560. Its totient is φ = 8441105760.

The previous prime is 13971994031. The next prime is 13971994073. The reversal of 13971994047 is 74049917931.

It is not a de Polignac number, because 13971994047 - 2⁴ = 13971994031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13971993984 and 13971994002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13971994847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19948 + ... + 168350.

It is an arithmetic number, because the mean of its divisors is an integer number (707887080).

Almost surely, 2^13971994047 is an apocalyptic number.

13971994047 is a deficient number, since it is larger than the sum of its proper divisors (8680392513).

13971994047 is a wasteful number, since it uses less digits than its factorization.

13971994047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148740 (or 148734 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 13971994047 in words is "thirteen billion, nine hundred seventy-one million, nine hundred ninety-four thousand, forty-seven".