13885991722 has 8 divisors (see below), whose sum is σ = 20839423716. Its totient is φ = 6939517152.

The previous prime is 13885991681. The next prime is 13885991741. The reversal of 13885991722 is 22719958831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8559765361 + 5326226361 = 92519^2 + 72981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13885991722² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734363 + ... + 1742350.

Almost surely, 2^13885991722 is an apocalyptic number.

13885991722 is a deficient number, since it is larger than the sum of its proper divisors (6953431994).

13885991722 is a wasteful number, since it uses less digits than its factorization.

13885991722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478712.

The product of its digits is 2177280, while the sum is 55.

The spelling of 13885991722 in words is "thirteen billion, eight hundred eighty-five million, nine hundred ninety-one thousand, seven hundred twenty-two".