22146453991 has 2 divisors, whose sum is σ = 22146453992. Its totient is φ = 22146453990.

The previous prime is 22146453961. The next prime is 22146454037. The reversal of 22146453991 is 19935464122.

It is an a-pointer prime, because the next prime (22146454037) can be obtained adding 22146453991 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22146453991 - 2⁹ = 22146453479 is a prime.

It is a super-3 number, since 3×22146453991³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22146453961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11073226995 + 11073226996.

It is an arithmetic number, because the mean of its divisors is an integer number (11073226996).

Almost surely, 2^22146453991 is an apocalyptic number.

22146453991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22146453991 is an equidigital number, since it uses as much as digits as its factorization.

22146453991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The spelling of 22146453991 in words is "twenty-two billion, one hundred forty-six million, four hundred fifty-three thousand, nine hundred ninety-one".