66102028292591 has 2 divisors, whose sum is σ = 66102028292592. Its totient is φ = 66102028292590.

The previous prime is 66102028292581. The next prime is 66102028292653. The reversal of 66102028292591 is 19529282020166.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66102028292591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66102028292581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33051014146295 + 33051014146296.

It is an arithmetic number, because the mean of its divisors is an integer number (33051014146296).

Almost surely, 2^{66102028292591} is an apocalyptic number.

66102028292591 is a deficient number, since it is larger than the sum of its proper divisors (1).

66102028292591 is an equidigital number, since it uses as much as digits as its factorization.

66102028292591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 66102028292591 in words is "sixty-six trillion, one hundred two billion, twenty-eight million, two hundred ninety-two thousand, five hundred ninety-one".