66076651522801 has 2 divisors, whose sum is σ = 66076651522802. Its totient is φ = 66076651522800.

The previous prime is 66076651522753. The next prime is 66076651522807. The reversal of 66076651522801 is 10822515667066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63335891808225 + 2740759714576 = 7958385^2 + 1655524^2 .

It is a cyclic number.

It is not a de Polignac number, because 66076651522801 - 2²³ = 66076643134193 is a prime.

It is a super-2 number, since 2×66076651522801² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66076651522807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33038325761400 + 33038325761401.

It is an arithmetic number, because the mean of its divisors is an integer number (33038325761401).

Almost surely, 2^{66076651522801} is an apocalyptic number.

It is an amenable number.

66076651522801 is a deficient number, since it is larger than the sum of its proper divisors (1).

66076651522801 is an equidigital number, since it uses as much as digits as its factorization.

66076651522801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 66076651522801 in words is "sixty-six trillion, seventy-six billion, six hundred fifty-one million, five hundred twenty-two thousand, eight hundred one".