14899712857 has 2 divisors, whose sum is σ = 14899712858. Its totient is φ = 14899712856.

The previous prime is 14899712843. The next prime is 14899712873. The reversal of 14899712857 is 75821799841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8090822601 + 6808890256 = 89949^2 + 82516^2 .

It is a cyclic number.

It is not a de Polignac number, because 14899712857 - 2³¹ = 12752229209 is a prime.

It is a super-2 number, since 2×14899712857² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14899712795 and 14899712804.

It is not a weakly prime, because it can be changed into another prime (14899712837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7449856428 + 7449856429.

It is an arithmetic number, because the mean of its divisors is an integer number (7449856429).

Almost surely, 2^14899712857 is an apocalyptic number.

It is an amenable number.

14899712857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14899712857 is an equidigital number, since it uses as much as digits as its factorization.

14899712857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 61.

The spelling of 14899712857 in words is "fourteen billion, eight hundred ninety-nine million, seven hundred twelve thousand, eight hundred fifty-seven".