13576974947642 has 4 divisors (see below), whose sum is σ = 20365462421466. Its totient is φ = 6788487473820.

The previous prime is 13576974947603. The next prime is 13576974947693. The reversal of 13576974947642 is 24674947967531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11871132593401 + 1705842354241 = 3445451^2 + 1306079^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13576974947642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394243736909 + ... + 3394243736912.

Almost surely, 2^{13576974947642} is an apocalyptic number.

13576974947642 is a deficient number, since it is larger than the sum of its proper divisors (6788487473824).

13576974947642 is an equidigital number, since it uses as much as digits as its factorization.

13576974947642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6788487473823.

The product of its digits is 1920360960, while the sum is 74.

The spelling of 13576974947642 in words is "thirteen trillion, five hundred seventy-six billion, nine hundred seventy-four million, nine hundred forty-seven thousand, six hundred forty-two".