16915880057 has 2 divisors, whose sum is σ = 16915880058. Its totient is φ = 16915880056.

The previous prime is 16915879997. The next prime is 16915880083. The reversal of 16915880057 is 75008851961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13947373801 + 2968506256 = 118099^2 + 54484^2 .

It is an emirp because it is prime and its reverse (75008851961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16915880057 - 2⁶ = 16915879993 is a prime.

It is a super-2 number, since 2×16915880057² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16915879987 and 16915880014.

It is not a weakly prime, because it can be changed into another prime (16915885057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8457940028 + 8457940029.

It is an arithmetic number, because the mean of its divisors is an integer number (8457940029).

Almost surely, 2^16915880057 is an apocalyptic number.

It is an amenable number.

16915880057 is a deficient number, since it is larger than the sum of its proper divisors (1).

16915880057 is an equidigital number, since it uses as much as digits as its factorization.

16915880057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 50.

The spelling of 16915880057 in words is "sixteen billion, nine hundred fifteen million, eight hundred eighty thousand, fifty-seven".