14400978187 has 2 divisors, whose sum is σ = 14400978188. Its totient is φ = 14400978186.

The previous prime is 14400978181. The next prime is 14400978227. The reversal of 14400978187 is 78187900441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14400978187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14400978187.

It is not a weakly prime, because it can be changed into another prime (14400978181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7200489093 + 7200489094.

It is an arithmetic number, because the mean of its divisors is an integer number (7200489094).

Almost surely, 2^14400978187 is an apocalyptic number.

14400978187 is a deficient number, since it is larger than the sum of its proper divisors (1).

14400978187 is an equidigital number, since it uses as much as digits as its factorization.

14400978187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 14400978187 in words is "fourteen billion, four hundred million, nine hundred seventy-eight thousand, one hundred eighty-seven".