13793343840 has 72 divisors (see below), whose sum is σ = 47069790768. Its totient is φ = 3678224640.

The previous prime is 13793343833. The next prime is 13793343859. The reversal of 13793343840 is 4834339731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4787916 + ... + 4790795.

It is an arithmetic number, because the mean of its divisors is an integer number (653747094).

Almost surely, 2^13793343840 is an apocalyptic number.

13793343840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13793343840 is an abundant number, since it is smaller than the sum of its proper divisors (33276446928).

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

13793343840 is a wasteful number, since it uses less digits than its factorization.

13793343840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9578732 (or 9578721 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 13793343840 in words is "thirteen billion, seven hundred ninety-three million, three hundred forty-three thousand, eight hundred forty".