13981859064 has 40 divisors (see below), whose sum is σ = 39162153360. Its totient is φ = 4660619472.

The previous prime is 13981859063. The next prime is 13981859077. The reversal of 13981859064 is 46095818931.

13981859064 is a `hidden beast` number, since 1 + 39 + 8 + 18 + 590 + 6 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13981859064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13981859063) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10787824 + ... + 10789119.

It is an arithmetic number, because the mean of its divisors is an integer number (979053834).

Almost surely, 2^13981859064 is an apocalyptic number.

It is an amenable number.

13981859064 is an abundant number, since it is smaller than the sum of its proper divisors (25180294296).

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

13981859064 is a wasteful number, since it uses less digits than its factorization.

13981859064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21576961 (or 21576948 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 13981859064 in words is "thirteen billion, nine hundred eighty-one million, eight hundred fifty-nine thousand, sixty-four".