13571163947 has 16 divisors (see below), whose sum is σ = 14921504640. Its totient is φ = 12240379200.

The previous prime is 13571163899. The next prime is 13571163989. The reversal of 13571163947 is 74936117531.

It is a cyclic number.

It is not a de Polignac number, because 13571163947 - 2⁶ = 13571163883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13571163247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4024172 + ... + 4027542.

It is an arithmetic number, because the mean of its divisors is an integer number (932594040).

Almost surely, 2^13571163947 is an apocalyptic number.

13571163947 is a deficient number, since it is larger than the sum of its proper divisors (1350340693).

13571163947 is a wasteful number, since it uses less digits than its factorization.

13571163947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154.

The product of its digits is 476280, while the sum is 47.

The spelling of 13571163947 in words is "thirteen billion, five hundred seventy-one million, one hundred sixty-three thousand, nine hundred forty-seven".