16274435857 has 2 divisors, whose sum is σ = 16274435858. Its totient is φ = 16274435856.

The previous prime is 16274435851. The next prime is 16274435861. The reversal of 16274435857 is 75853447261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12673355776 + 3601080081 = 112576^2 + 60009^2 .

It is an emirp because it is prime and its reverse (75853447261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16274435857 - 2¹¹ = 16274433809 is a prime.

It is not a weakly prime, because it can be changed into another prime (16274435851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8137217928 + 8137217929.

It is an arithmetic number, because the mean of its divisors is an integer number (8137217929).

Almost surely, 2^16274435857 is an apocalyptic number.

It is an amenable number.

16274435857 is a deficient number, since it is larger than the sum of its proper divisors (1).

16274435857 is an equidigital number, since it uses as much as digits as its factorization.

16274435857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 52.

The spelling of 16274435857 in words is "sixteen billion, two hundred seventy-four million, four hundred thirty-five thousand, eight hundred fifty-seven".