13936356816 has 80 divisors (see below), whose sum is σ = 38089972800. Its totient is φ = 4378558464.

The previous prime is 13936356787. The next prime is 13936356817. The reversal of 13936356816 is 61865363931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13936356817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140880 + ... + 218448.

It is an arithmetic number, because the mean of its divisors is an integer number (476124660).

Almost surely, 2^13936356816 is an apocalyptic number.

13936356816 is a gapful number since it is divisible by the number (16) 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 13936356816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19044986400).

13936356816 is an abundant number, since it is smaller than the sum of its proper divisors (24153615984).

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

13936356816 is a wasteful number, since it uses less digits than its factorization.

13936356816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77796 (or 77790 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The spelling of 13936356816 in words is "thirteen billion, nine hundred thirty-six million, three hundred fifty-six thousand, eight hundred sixteen".