13641515247 has 8 divisors (see below), whose sum is σ = 18243639040. Its totient is φ = 9066867480.

The previous prime is 13641515243. The next prime is 13641515269. The reversal of 13641515247 is 74251514631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13641515247 - 2² = 13641515243 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 (13641515243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6867847 + ... + 6869832.

It is an arithmetic number, because the mean of its divisors is an integer number (2280454880).

Almost surely, 2^13641515247 is an apocalyptic number.

13641515247 is a deficient number, since it is larger than the sum of its proper divisors (4602123793).

13641515247 is a wasteful number, since it uses less digits than its factorization.

13641515247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13738013.

The product of its digits is 100800, while the sum is 39.

The spelling of 13641515247 in words is "thirteen billion, six hundred forty-one million, five hundred fifteen thousand, two hundred forty-seven".