13518748736 has 14 divisors (see below), whose sum is σ = 26826267150. Its totient is φ = 6759374336.

The previous prime is 13518748669. The next prime is 13518748781. The reversal of 13518748736 is 63784781531.

It can be written as a sum of positive squares in only one way, i.e., 8064040000 + 5454708736 = 89800^2 + 73856^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615161 + ... + 105615288.

Almost surely, 2^13518748736 is an apocalyptic number.

13518748736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13518748736 is a deficient number, since it is larger than the sum of its proper divisors (13307518414).

13518748736 is an equidigital number, since it uses as much as digits as its factorization.

13518748736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211230461 (or 211230451 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The spelling of 13518748736 in words is "thirteen billion, five hundred eighteen million, seven hundred forty-eight thousand, seven hundred thirty-six".