16177617689 has 2 divisors, whose sum is σ = 16177617690. Its totient is φ = 16177617688.

The previous prime is 16177617671. The next prime is 16177617719. The reversal of 16177617689 is 98671677161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12889742089 + 3287875600 = 113533^2 + 57340^2 .

It is a cyclic number.

It is not a de Polignac number, because 16177617689 - 2²⁴ = 16160840473 is a prime.

It is not a weakly prime, because it can be changed into another prime (16177617649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8088808844 + 8088808845.

It is an arithmetic number, because the mean of its divisors is an integer number (8088808845).

Almost surely, 2^16177617689 is an apocalyptic number.

It is an amenable number.

16177617689 is a deficient number, since it is larger than the sum of its proper divisors (1).

16177617689 is an equidigital number, since it uses as much as digits as its factorization.

16177617689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 59.

The spelling of 16177617689 in words is "sixteen billion, one hundred seventy-seven million, six hundred seventeen thousand, six hundred eighty-nine".