13968140868 has 36 divisors (see below), whose sum is σ = 38518207728. Its totient is φ = 4232769840.

The previous prime is 13968140863. The next prime is 13968140873. The reversal of 13968140868 is 86804186931.

13968140868 is a `hidden beast` number, since 13 + 96 + 81 + 408 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (13968140863) and next prime (13968140873).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (13968140861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17636146 + ... + 17636937.

Almost surely, 2^13968140868 is an apocalyptic number.

13968140868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13968140868 is an abundant number, since it is smaller than the sum of its proper divisors (24550066860).

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

13968140868 is a wasteful number, since it uses less digits than its factorization.

13968140868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35273104 (or 35273099 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 13968140868 in words is "thirteen billion, nine hundred sixty-eight million, one hundred forty thousand, eight hundred sixty-eight".