16972053893 has 2 divisors, whose sum is σ = 16972053894. Its totient is φ = 16972053892.

The previous prime is 16972053881. The next prime is 16972053913. The reversal of 16972053893 is 39835027961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9188756164 + 7783297729 = 95858^2 + 88223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16972053893 is a prime.

It is a super-2 number, since 2×16972053893² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16972053803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8486026946 + 8486026947.

It is an arithmetic number, because the mean of its divisors is an integer number (8486026947).

Almost surely, 2^16972053893 is an apocalyptic number.

It is an amenable number.

16972053893 is a deficient number, since it is larger than the sum of its proper divisors (1).

16972053893 is an equidigital number, since it uses as much as digits as its factorization.

16972053893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 16972053893 in words is "sixteen billion, nine hundred seventy-two million, fifty-three thousand, eight hundred ninety-three".