14678906658781 has 2 divisors, whose sum is σ = 14678906658782. Its totient is φ = 14678906658780.

The previous prime is 14678906658737. The next prime is 14678906658797. The reversal of 14678906658781 is 18785660987641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12912997893156 + 1765908765625 = 3593466^2 + 1328875^2 .

It is a cyclic number.

It is not a de Polignac number, because 14678906658781 - 2⁷ = 14678906658653 is a prime.

It is a super-2 number, since 2×14678906658781² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14678906658698 and 14678906658707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14678906658881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7339453329390 + 7339453329391.

It is an arithmetic number, because the mean of its divisors is an integer number (7339453329391).

Almost surely, 2^{14678906658781} is an apocalyptic number.

It is an amenable number.

14678906658781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14678906658781 is an equidigital number, since it uses as much as digits as its factorization.

14678906658781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 975421440, while the sum is 76.

The spelling of 14678906658781 in words is "fourteen trillion, six hundred seventy-eight billion, nine hundred six million, six hundred fifty-eight thousand, seven hundred eighty-one".