66968964241901 has 2 divisors, whose sum is σ = 66968964241902. Its totient is φ = 66968964241900.

The previous prime is 66968964241891. The next prime is 66968964241951. The reversal of 66968964241901 is 10914246986966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65622134361001 + 1346829880900 = 8100749^2 + 1160530^2 .

It is a cyclic number.

It is not a de Polignac number, because 66968964241901 - 2³⁴ = 66951784372717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66968964241951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33484482120950 + 33484482120951.

It is an arithmetic number, because the mean of its divisors is an integer number (33484482120951).

Almost surely, 2^{66968964241901} is an apocalyptic number.

It is an amenable number.

66968964241901 is a deficient number, since it is larger than the sum of its proper divisors (1).

66968964241901 is an equidigital number, since it uses as much as digits as its factorization.

66968964241901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241864704, while the sum is 71.

The spelling of 66968964241901 in words is "sixty-six trillion, nine hundred sixty-eight billion, nine hundred sixty-four million, two hundred forty-one thousand, nine hundred one".