14038640720 has 90 divisors (see below), whose sum is σ = 35378450478. Its totient is φ = 5178411264.

The previous prime is 14038640719. The next prime is 14038640771. The reversal of 14038640720 is 2704683041.

It can be written as a sum of positive squares in 3 ways, for example, as 66455104 + 13972185616 = 8152^2 + 118204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13776371 + ... + 13777389.

Almost surely, 2^14038640720 is an apocalyptic number.

14038640720 is a gapful number since it is divisible by the number (10) 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 14038640720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17689225239).

14038640720 is an abundant number, since it is smaller than the sum of its proper divisors (21339809758).

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

14038640720 is an equidigital number, since it uses as much as digits as its factorization.

14038640720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 14038640720 in words is "fourteen billion, thirty-eight million, six hundred forty thousand, seven hundred twenty".