13797621504 has 108 divisors (see below), whose sum is σ = 39842056800. Its totient is φ = 4592259072.

The previous prime is 13797621499. The next prime is 13797621511. The reversal of 13797621504 is 40512679731.

13797621504 is a `hidden beast` number, since 1 + 3 + 79 + 76 + 2 + 1 + 504 = 666.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13797621504.

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, 1652412 + ... + 1660740.

Almost surely, 2^13797621504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13797621504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19921028400).

13797621504 is an abundant number, since it is smaller than the sum of its proper divisors (26044435296).

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

13797621504 is an equidigital number, since it uses as much as digits as its factorization.

13797621504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070 (or 9053 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 13797621504 in words is "thirteen billion, seven hundred ninety-seven million, six hundred twenty-one thousand, five hundred four".