82187974333 has 2 divisors, whose sum is σ = 82187974334. Its totient is φ = 82187974332.

The previous prime is 82187974289. The next prime is 82187974357. The reversal of 82187974333 is 33347978128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56702086884 + 25485887449 = 238122^2 + 159643^2 .

It is a cyclic number.

It is not a de Polignac number, because 82187974333 - 2¹⁷ = 82187843261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82187974373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41093987166 + 41093987167.

It is an arithmetic number, because the mean of its divisors is an integer number (41093987167).

Almost surely, 2^82187974333 is an apocalyptic number.

It is an amenable number.

82187974333 is a deficient number, since it is larger than the sum of its proper divisors (1).

82187974333 is an equidigital number, since it uses as much as digits as its factorization.

82187974333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The spelling of 82187974333 in words is "eighty-two billion, one hundred eighty-seven million, nine hundred seventy-four thousand, three hundred thirty-three".