14981978659 has 2 divisors, whose sum is σ = 14981978660. Its totient is φ = 14981978658.

The previous prime is 14981978653. The next prime is 14981978663. The reversal of 14981978659 is 95687918941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 14981978659 - 2¹³ = 14981970467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14981978594 and 14981978603.

It is not a weakly prime, because it can be changed into another prime (14981978653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7490989329 + 7490989330.

It is an arithmetic number, because the mean of its divisors is an integer number (7490989330).

Almost surely, 2^14981978659 is an apocalyptic number.

14981978659 is a deficient number, since it is larger than the sum of its proper divisors (1).

14981978659 is an equidigital number, since it uses as much as digits as its factorization.

14981978659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 67.

The spelling of 14981978659 in words is "fourteen billion, nine hundred eighty-one million, nine hundred seventy-eight thousand, six hundred fifty-nine".