13642968574 has 4 divisors (see below), whose sum is σ = 20464452864. Its totient is φ = 6821484286.

The previous prime is 13642968551. The next prime is 13642968583. The reversal of 13642968574 is 47586924631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47586924631 = 103 ⋅462008977.

It is a super-2 number, since 2×13642968574² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410742142 + ... + 3410742145.

It is an arithmetic number, because the mean of its divisors is an integer number (5116113216).

Almost surely, 2^13642968574 is an apocalyptic number.

13642968574 is a deficient number, since it is larger than the sum of its proper divisors (6821484290).

13642968574 is an equidigital number, since it uses as much as digits as its factorization.

13642968574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6821484289.

The product of its digits is 8709120, while the sum is 55.

The spelling of 13642968574 in words is "thirteen billion, six hundred forty-two million, nine hundred sixty-eight thousand, five hundred seventy-four".