13515415225344 has 176 divisors, whose sum is σ = 41766389293440. Its totient is φ = 4309262622720.

The previous prime is 13515415225343. The next prime is 13515415225381. The reversal of 13515415225344 is 44352251451531.

13515415225344 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 5 + 415 + 225 + 3 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13515415225344.

It is not an unprimeable number, because it can be changed into a prime (13515415225343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9991027 + ... + 11262834.

Almost surely, 2^{13515415225344} is an apocalyptic number.

It is an amenable number.

13515415225344 is an abundant number, since it is smaller than the sum of its proper divisors (28250974068096).

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

13515415225344 is a wasteful number, since it uses less digits than its factorization.

13515415225344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21253913 (or 21253889 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

Adding to 13515415225344 its reverse (44352251451531), we get a palindrome (57867666676875).

The spelling of 13515415225344 in words is "thirteen trillion, five hundred fifteen billion, four hundred fifteen million, two hundred twenty-five thousand, three hundred forty-four".