13207515664 has 60 divisors (see below), whose sum is σ = 29787577104. Its totient is φ = 5656537152.

The previous prime is 13207515613. The next prime is 13207515667. The reversal of 13207515664 is 46651570231.

It is not an unprimeable number, because it can be changed into a prime (13207515667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1364827 + ... + 1374469.

Almost surely, 2^13207515664 is an apocalyptic number.

13207515664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13207515664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14893788552).

13207515664 is an abundant number, since it is smaller than the sum of its proper divisors (16580061440).

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

13207515664 is a wasteful number, since it uses less digits than its factorization.

13207515664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11412 (or 11399 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 13207515664 in words is "thirteen billion, two hundred seven million, five hundred fifteen thousand, six hundred sixty-four".