13996728064 has 36 divisors (see below), whose sum is σ = 30478676760. Its totient is φ = 6362147840.

The previous prime is 13996728059. The next prime is 13996728071. The reversal of 13996728064 is 46082769931.

It is a junction number, because it is equal to n+sod(n) for n = 13996727996 and 13996728014.

It is a congruent number.

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, 2482399 + ... + 2488030.

It is an arithmetic number, because the mean of its divisors is an integer number (846629910).

Almost surely, 2^13996728064 is an apocalyptic number.

It is an amenable number.

13996728064 is an abundant number, since it is smaller than the sum of its proper divisors (16481948696).

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

13996728064 is an equidigital number, since it uses as much as digits as its factorization.

13996728064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970456 (or 4970442 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 13996728064 in words is "thirteen billion, nine hundred ninety-six million, seven hundred twenty-eight thousand, sixty-four".