16740439057 has 2 divisors, whose sum is σ = 16740439058. Its totient is φ = 16740439056.

The previous prime is 16740439043. The next prime is 16740439097. The reversal of 16740439057 is 75093404761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9689646096 + 7050792961 = 98436^2 + 83969^2 .

It is a cyclic number.

It is not a de Polignac number, because 16740439057 - 2¹¹ = 16740437009 is a prime.

It is a super-2 number, since 2×16740439057² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16740438998 and 16740439016.

It is not a weakly prime, because it can be changed into another prime (16740439097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8370219528 + 8370219529.

It is an arithmetic number, because the mean of its divisors is an integer number (8370219529).

Almost surely, 2^16740439057 is an apocalyptic number.

It is an amenable number.

16740439057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16740439057 is an equidigital number, since it uses as much as digits as its factorization.

16740439057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 16740439057 in words is "sixteen billion, seven hundred forty million, four hundred thirty-nine thousand, fifty-seven".