16274391097 has 2 divisors, whose sum is σ = 16274391098. Its totient is φ = 16274391096.

The previous prime is 16274391079. The next prime is 16274391137. The reversal of 16274391097 is 79019347261.

Together with previous prime (16274391079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16133826361 + 140564736 = 127019^2 + 11856^2 .

It is an emirp because it is prime and its reverse (79019347261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16274391097 is a prime.

It is a super-2 number, since 2×16274391097² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16274391097.

It is not a weakly prime, because it can be changed into another prime (16274391197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8137195548 + 8137195549.

It is an arithmetic number, because the mean of its divisors is an integer number (8137195549).

Almost surely, 2^16274391097 is an apocalyptic number.

It is an amenable number.

16274391097 is a deficient number, since it is larger than the sum of its proper divisors (1).

16274391097 is an equidigital number, since it uses as much as digits as its factorization.

16274391097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 16274391097 in words is "sixteen billion, two hundred seventy-four million, three hundred ninety-one thousand, ninety-seven".