13650415615 has 4 divisors (see below), whose sum is σ = 16380498744. Its totient is φ = 10920332488.

The previous prime is 13650415607. The next prime is 13650415619. The reversal of 13650415615 is 51651405631.

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 13650415615 - 2³ = 13650415607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13650415619) 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, 1365041557 + ... + 1365041566.

It is an arithmetic number, because the mean of its divisors is an integer number (4095124686).

Almost surely, 2^13650415615 is an apocalyptic number.

13650415615 is a deficient number, since it is larger than the sum of its proper divisors (2730083129).

13650415615 is an equidigital number, since it uses as much as digits as its factorization.

13650415615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730083128.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 13650415615 in words is "thirteen billion, six hundred fifty million, four hundred fifteen thousand, six hundred fifteen".