14818617557 has 2 divisors, whose sum is σ = 14818617558. Its totient is φ = 14818617556.

The previous prime is 14818617547. The next prime is 14818617581. The reversal of 14818617557 is 75571681841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9628711876 + 5189905681 = 98126^2 + 72041^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14818617557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 14818617499 and 14818617508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14818617547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7409308778 + 7409308779.

It is an arithmetic number, because the mean of its divisors is an integer number (7409308779).

Almost surely, 2^14818617557 is an apocalyptic number.

It is an amenable number.

14818617557 is a deficient number, since it is larger than the sum of its proper divisors (1).

14818617557 is an equidigital number, since it uses as much as digits as its factorization.

14818617557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881600, while the sum is 53.

The spelling of 14818617557 in words is "fourteen billion, eight hundred eighteen million, six hundred seventeen thousand, five hundred fifty-seven".