16289737657 has 2 divisors, whose sum is σ = 16289737658. Its totient is φ = 16289737656.

The previous prime is 16289737627. The next prime is 16289737663. The reversal of 16289737657 is 75673798261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15337336336 + 952401321 = 123844^2 + 30861^2 .

It is a cyclic number.

It is not a de Polignac number, because 16289737657 - 2¹⁵ = 16289704889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16289737595 and 16289737604.

It is not a weakly prime, because it can be changed into another prime (16289737627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8144868828 + 8144868829.

It is an arithmetic number, because the mean of its divisors is an integer number (8144868829).

Almost surely, 2^16289737657 is an apocalyptic number.

It is an amenable number.

16289737657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16289737657 is an equidigital number, since it uses as much as digits as its factorization.

16289737657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 61.

The spelling of 16289737657 in words is "sixteen billion, two hundred eighty-nine million, seven hundred thirty-seven thousand, six hundred fifty-seven".