402165530647 has 2 divisors, whose sum is σ = 402165530648. Its totient is φ = 402165530646.

The previous prime is 402165530609. The next prime is 402165530687. The reversal of 402165530647 is 746035561204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402165530647 - 2³⁵ = 367805792279 is a prime.

It is a super-2 number, since 2×402165530647² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402165530687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201082765323 + 201082765324.

It is an arithmetic number, because the mean of its divisors is an integer number (201082765324).

Almost surely, 2^402165530647 is an apocalyptic number.

402165530647 is a deficient number, since it is larger than the sum of its proper divisors (1).

402165530647 is an equidigital number, since it uses as much as digits as its factorization.

402165530647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 402165530647 in words is "four hundred two billion, one hundred sixty-five million, five hundred thirty thousand, six hundred forty-seven".