14778136897 has 2 divisors, whose sum is σ = 14778136898. Its totient is φ = 14778136896.

The previous prime is 14778136889. The next prime is 14778136909. The reversal of 14778136897 is 79863187741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13313467456 + 1464669441 = 115384^2 + 38271^2 .

It is a cyclic number.

It is not a de Polignac number, because 14778136897 - 2³ = 14778136889 is a prime.

It is not a weakly prime, because it can be changed into another prime (14778134897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7389068448 + 7389068449.

It is an arithmetic number, because the mean of its divisors is an integer number (7389068449).

Almost surely, 2^14778136897 is an apocalyptic number.

It is an amenable number.

14778136897 is a deficient number, since it is larger than the sum of its proper divisors (1).

14778136897 is an equidigital number, since it uses as much as digits as its factorization.

14778136897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 61.

The spelling of 14778136897 in words is "fourteen billion, seven hundred seventy-eight million, one hundred thirty-six thousand, eight hundred ninety-seven".