13870733746531 has 4 divisors (see below), whose sum is σ = 13870778842872. Its totient is φ = 13870688650192.

The previous prime is 13870733746477. The next prime is 13870733746549. The reversal of 13870733746531 is 13564733707831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13870733746531 - 2¹⁹ = 13870733222243 is a prime.

It is a super-3 number, since 3×13870733746531³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13870733746231) 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, 22083610 + ... + 22703023.

It is an arithmetic number, because the mean of its divisors is an integer number (3467694710718).

Almost surely, 2^{13870733746531} is an apocalyptic number.

13870733746531 is a deficient number, since it is larger than the sum of its proper divisors (45096341).

13870733746531 is an equidigital number, since it uses as much as digits as its factorization.

13870733746531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45096340.

The product of its (nonzero) digits is 26671680, while the sum is 58.

The spelling of 13870733746531 in words is "thirteen trillion, eight hundred seventy billion, seven hundred thirty-three million, seven hundred forty-six thousand, five hundred thirty-one".