13899755520 has 1092 divisors, whose sum is σ = 61236898920. Its totient is φ = 3009871872.

The previous prime is 13899755503. The next prime is 13899755599. The reversal of 13899755520 is 2555799831.

13899755520 is a `hidden beast` number, since 1 + 3 + 89 + 9 + 7 + 5 + 552 + 0 = 666.

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 83 ways as a sum of consecutive naturals, for example, 731566071 + ... + 731566089.

Almost surely, 2^13899755520 is an apocalyptic number.

13899755520 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 13899755520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30618449460).

13899755520 is an abundant number, since it is smaller than the sum of its proper divisors (47337143400).

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

13899755520 is an frugal number, since it uses more digits than its factorization.

13899755520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 3402000, while the sum is 54.

The spelling of 13899755520 in words is "thirteen billion, eight hundred ninety-nine million, seven hundred fifty-five thousand, five hundred twenty".