13515515445000 has 80 divisors (see below), whose sum is σ = 42222470297040. Its totient is φ = 3604137448000.

The previous prime is 13515515444993. The next prime is 13515515445013. The reversal of 13515515445000 is 54451551531.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13515515445000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 450502182 + ... + 450532181.

It is an arithmetic number, because the mean of its divisors is an integer number (527780878713).

Almost surely, 2^{13515515445000} is an apocalyptic number.

13515515445000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13515515445000 is an abundant number, since it is smaller than the sum of its proper divisors (28706954852040).

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

13515515445000 is an equidigital number, since it uses as much as digits as its factorization.

13515515445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901034392 (or 901034373 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 39.

Adding to 13515515445000 its reverse (54451551531), we get a palindrome (13569966996531).

The spelling of 13515515445000 in words is "thirteen trillion, five hundred fifteen billion, five hundred fifteen million, four hundred forty-five thousand".