13120650636 has 24 divisors (see below), whose sum is σ = 30616884480. Its totient is φ = 4373259792.

The previous prime is 13120650619. The next prime is 13120650637. The reversal of 13120650636 is 63605602131.

It is a super-2 number, since 2×13120650636² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13120650597 and 13120650606.

It is not an unprimeable number, because it can be changed into a prime (13120650637) 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, 230185 + ... + 281471.

It is an arithmetic number, because the mean of its divisors is an integer number (1275703520).

Almost surely, 2^13120650636 is an apocalyptic number.

It is an amenable number.

13120650636 is an abundant number, since it is smaller than the sum of its proper divisors (17496233844).

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

13120650636 is a wasteful number, since it uses less digits than its factorization.

13120650636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72613 (or 72611 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 33.

The spelling of 13120650636 in words is "thirteen billion, one hundred twenty million, six hundred fifty thousand, six hundred thirty-six".