13997862720 has 140 divisors (see below), whose sum is σ = 49792952484. Its totient is φ = 3732756480.

The previous prime is 13997862719. The next prime is 13997862733. The reversal of 13997862720 is 2726879931.

13997862720 is a `hidden beast` number, since 1 + 3 + 9 + 9 + 7 + 8 + 627 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3996262656 + 10001600064 = 63216^2 + 100008^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 244101 + ... + 295940.

Almost surely, 2^13997862720 is an apocalyptic number.

13997862720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13997862720 is an abundant number, since it is smaller than the sum of its proper divisors (35795089764).

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

13997862720 is an equidigital number, since it uses as much as digits as its factorization.

13997862720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540070 (or 540051 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 13997862720 in words is "thirteen billion, nine hundred ninety-seven million, eight hundred sixty-two thousand, seven hundred twenty".