16672918633577 has 2 divisors, whose sum is σ = 16672918633578. Its totient is φ = 16672918633576.

The previous prime is 16672918633549. The next prime is 16672918633601. The reversal of 16672918633577 is 77533681927661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9679913897536 + 6993004736041 = 3111256^2 + 2644429^2 .

It is a cyclic number.

It is not a de Polignac number, because 16672918633577 - 2⁶ = 16672918633513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16672918633577.

It is not a weakly prime, because it can be changed into another prime (16672918633537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8336459316788 + 8336459316789.

It is an arithmetic number, because the mean of its divisors is an integer number (8336459316789).

Almost surely, 2^{16672918633577} is an apocalyptic number.

It is an amenable number.

16672918633577 is a deficient number, since it is larger than the sum of its proper divisors (1).

16672918633577 is an equidigital number, since it uses as much as digits as its factorization.

16672918633577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480090240, while the sum is 71.

The spelling of 16672918633577 in words is "sixteen trillion, six hundred seventy-two billion, nine hundred eighteen million, six hundred thirty-three thousand, five hundred seventy-seven".