216992922551 has 2 divisors, whose sum is σ = 216992922552. Its totient is φ = 216992922550.

The previous prime is 216992922491. The next prime is 216992922569. The reversal of 216992922551 is 155229299612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216992922551 - 2¹⁴ = 216992906167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216992922493 and 216992922502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216992922151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108496461275 + 108496461276.

It is an arithmetic number, because the mean of its divisors is an integer number (108496461276).

Almost surely, 2^216992922551 is an apocalyptic number.

216992922551 is a deficient number, since it is larger than the sum of its proper divisors (1).

216992922551 is an equidigital number, since it uses as much as digits as its factorization.

216992922551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1749600, while the sum is 53.

The spelling of 216992922551 in words is "two hundred sixteen billion, nine hundred ninety-two million, nine hundred twenty-two thousand, five hundred fifty-one".