13213854836 has 72 divisors (see below), whose sum is σ = 30037674240. Its totient is φ = 4952280384.

The previous prime is 13213854791. The next prime is 13213854839. The reversal of 13213854836 is 63845831231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213854839) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81125 + ... + 181683.

It is an arithmetic number, because the mean of its divisors is an integer number (417189920).

Almost surely, 2^13213854836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13213854836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15018837120).

13213854836 is an abundant number, since it is smaller than the sum of its proper divisors (16823819404).

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

13213854836 is a wasteful number, since it uses less digits than its factorization.

13213854836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100621 (or 100600 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 13213854836 in words is "thirteen billion, two hundred thirteen million, eight hundred fifty-four thousand, eight hundred thirty-six".