13845490979 has 4 divisors (see below), whose sum is σ = 13877615520. Its totient is φ = 13813366440.

The previous prime is 13845490963. The next prime is 13845490993. The reversal of 13845490979 is 97909454831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97909454831 = 97 ⋅1009375823.

It is a cyclic number.

It is not a de Polignac number, because 13845490979 - 2⁴ = 13845490963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13845490079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16061624 + ... + 16062485.

It is an arithmetic number, because the mean of its divisors is an integer number (3469403880).

Almost surely, 2^13845490979 is an apocalyptic number.

13845490979 is a deficient number, since it is larger than the sum of its proper divisors (32124541).

13845490979 is an equidigital number, since it uses as much as digits as its factorization.

13845490979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32124540.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 13845490979 in words is "thirteen billion, eight hundred forty-five million, four hundred ninety thousand, nine hundred seventy-nine".