199226837813623 has 2 divisors, whose sum is σ = 199226837813624. Its totient is φ = 199226837813622.

The previous prime is 199226837813593. The next prime is 199226837813657. The reversal of 199226837813623 is 326318738622991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199226837813623 - 2²¹ = 199226835716471 is a prime.

It is a super-2 number, since 2×199226837813623² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199226837813023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99613418906811 + 99613418906812.

It is an arithmetic number, because the mean of its divisors is an integer number (99613418906812).

Almost surely, 2^{199226837813623} is an apocalyptic number.

199226837813623 is a deficient number, since it is larger than the sum of its proper divisors (1).

199226837813623 is an equidigital number, since it uses as much as digits as its factorization.

199226837813623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282175488, while the sum is 70.

The spelling of 199226837813623 in words is "one hundred ninety-nine trillion, two hundred twenty-six billion, eight hundred thirty-seven million, eight hundred thirteen thousand, six hundred twenty-three".