55332666623291 has 2 divisors, whose sum is σ = 55332666623292. Its totient is φ = 55332666623290.

The previous prime is 55332666623281. The next prime is 55332666623309. The reversal of 55332666623291 is 19232666623355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55332666623291 - 2³⁸ = 55057788716347 is a prime.

It is a super-2 number, since 2×55332666623291² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55332666623291.

It is not a weakly prime, because it can be changed into another prime (55332666623281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27666333311645 + 27666333311646.

It is an arithmetic number, because the mean of its divisors is an integer number (27666333311646).

Almost surely, 2^{55332666623291} is an apocalyptic number.

55332666623291 is a deficient number, since it is larger than the sum of its proper divisors (1).

55332666623291 is an equidigital number, since it uses as much as digits as its factorization.

55332666623291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62985600, while the sum is 59.

The spelling of 55332666623291 in words is "fifty-five trillion, three hundred thirty-two billion, six hundred sixty-six million, six hundred twenty-three thousand, two hundred ninety-one".