16977145369 has 2 divisors, whose sum is σ = 16977145370. Its totient is φ = 16977145368.

The previous prime is 16977145327. The next prime is 16977145429. The reversal of 16977145369 is 96354177961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11820038400 + 5157106969 = 108720^2 + 71813^2 .

It is a cyclic number.

It is not a de Polignac number, because 16977145369 - 2¹⁵ = 16977112601 is a prime.

It is a super-2 number, since 2×16977145369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16977145309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8488572684 + 8488572685.

It is an arithmetic number, because the mean of its divisors is an integer number (8488572685).

Almost surely, 2^16977145369 is an apocalyptic number.

It is an amenable number.

16977145369 is a deficient number, since it is larger than the sum of its proper divisors (1).

16977145369 is an equidigital number, since it uses as much as digits as its factorization.

16977145369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 58.

The spelling of 16977145369 in words is "sixteen billion, nine hundred seventy-seven million, one hundred forty-five thousand, three hundred sixty-nine".