66922473263381 has 2 divisors, whose sum is σ = 66922473263382. Its totient is φ = 66922473263380.

The previous prime is 66922473263341. The next prime is 66922473263407. The reversal of 66922473263381 is 18336237422966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66476871622225 + 445601641156 = 8153335^2 + 667534^2 .

It is a cyclic number.

It is not a de Polignac number, because 66922473263381 - 2¹⁴ = 66922473246997 is a prime.

It is a super-2 number, since 2×66922473263381² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66922473263341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33461236631690 + 33461236631691.

It is an arithmetic number, because the mean of its divisors is an integer number (33461236631691).

Almost surely, 2^{66922473263381} is an apocalyptic number.

It is an amenable number.

66922473263381 is a deficient number, since it is larger than the sum of its proper divisors (1).

66922473263381 is an equidigital number, since it uses as much as digits as its factorization.

66922473263381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94058496, while the sum is 62.

The spelling of 66922473263381 in words is "sixty-six trillion, nine hundred twenty-two billion, four hundred seventy-three million, two hundred sixty-three thousand, three hundred eighty-one".