16773504997 has 2 divisors, whose sum is σ = 16773504998. Its totient is φ = 16773504996.

The previous prime is 16773504983. The next prime is 16773505019. The reversal of 16773504997 is 79940537761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15801998436 + 971506561 = 125706^2 + 31169^2 .

It is a cyclic number.

It is not a de Polignac number, because 16773504997 - 2¹⁹ = 16772980709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16773504947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8386752498 + 8386752499.

It is an arithmetic number, because the mean of its divisors is an integer number (8386752499).

Almost surely, 2^16773504997 is an apocalyptic number.

It is an amenable number.

16773504997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16773504997 is an equidigital number, since it uses as much as digits as its factorization.

16773504997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The spelling of 16773504997 in words is "sixteen billion, seven hundred seventy-three million, five hundred four thousand, nine hundred ninety-seven".