13968821000 has 32 divisors (see below), whose sum is σ = 32687043480. Its totient is φ = 5587528000.

The previous prime is 13968820981. The next prime is 13968821039. The reversal of 13968821000 is 12886931.

It can be written as a sum of positive squares in 4 ways, for example, as 1201176964 + 12767644036 = 34658^2 + 112994^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6983411 + ... + 6985410.

Almost surely, 2^13968821000 is an apocalyptic number.

13968821000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13968821000 is an abundant number, since it is smaller than the sum of its proper divisors (18718222480).

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

13968821000 is a wasteful number, since it uses less digits than its factorization.

13968821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13968842 (or 13968828 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 13968821000 in words is "thirteen billion, nine hundred sixty-eight million, eight hundred twenty-one thousand".