13971870045 has 48 divisors (see below), whose sum is σ = 28242489600. Its totient is φ = 6387133536.

The previous prime is 13971870023. The next prime is 13971870083. The reversal of 13971870045 is 54007817931.

It is not a de Polignac number, because 13971870045 - 2⁵ = 13971870013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437169 + ... + 468038.

It is an arithmetic number, because the mean of its divisors is an integer number (588385200).

Almost surely, 2^13971870045 is an apocalyptic number.

13971870045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13971870045 is an abundant number, since it is smaller than the sum of its proper divisors (14270619555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13971870045 is an equidigital number, since it uses as much as digits as its factorization.

13971870045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905239 (or 905222 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 13971870045 in words is "thirteen billion, nine hundred seventy-one million, eight hundred seventy thousand, forty-five".