66086897479201 has 2 divisors, whose sum is σ = 66086897479202. Its totient is φ = 66086897479200.

The previous prime is 66086897479153. The next prime is 66086897479277. The reversal of 66086897479201 is 10297479868066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53785575838225 + 12301321640976 = 7333865^2 + 3507324^2 .

It is a cyclic number.

It is not a de Polignac number, because 66086897479201 - 2²¹ = 66086895382049 is a prime.

It is not a weakly prime, because it can be changed into another prime (66086897471201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33043448739600 + 33043448739601.

It is an arithmetic number, because the mean of its divisors is an integer number (33043448739601).

Almost surely, 2^{66086897479201} is an apocalyptic number.

It is an amenable number.

66086897479201 is a deficient number, since it is larger than the sum of its proper divisors (1).

66086897479201 is an equidigital number, since it uses as much as digits as its factorization.

66086897479201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 438939648, while the sum is 73.

The spelling of 66086897479201 in words is "sixty-six trillion, eighty-six billion, eight hundred ninety-seven million, four hundred seventy-nine thousand, two hundred one".