13934344720 has 20 divisors (see below), whose sum is σ = 32397351660. Its totient is φ = 5573737856.

The previous prime is 13934344703. The next prime is 13934344777. The reversal of 13934344720 is 2744343931.

It can be written as a sum of positive squares in 2 ways, for example, as 3586572544 + 10347772176 = 59888^2 + 101724^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87089575 + ... + 87089734.

It is an arithmetic number, because the mean of its divisors is an integer number (1619867583).

Almost surely, 2^13934344720 is an apocalyptic number.

13934344720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13934344720 is an abundant number, since it is smaller than the sum of its proper divisors (18463006940).

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

13934344720 is a wasteful number, since it uses less digits than its factorization.

13934344720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174179322 (or 174179316 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 13934344720 in words is "thirteen billion, nine hundred thirty-four million, three hundred forty-four thousand, seven hundred twenty".