13217986507 has 4 divisors (see below), whose sum is σ = 14419621656. Its totient is φ = 12016351360.

The previous prime is 13217986487. The next prime is 13217986543. The reversal of 13217986507 is 70568971231.

It is a happy number.

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 13217986507 - 2²⁷ = 13083768779 is a prime.

It is a super-2 number, since 2×13217986507² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13217986577) 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, 600817558 + ... + 600817579.

It is an arithmetic number, because the mean of its divisors is an integer number (3604905414).

Almost surely, 2^13217986507 is an apocalyptic number.

13217986507 is a deficient number, since it is larger than the sum of its proper divisors (1201635149).

13217986507 is a wasteful number, since it uses less digits than its factorization.

13217986507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201635148.

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 13217986507 in words is "thirteen billion, two hundred seventeen million, nine hundred eighty-six thousand, five hundred seven".