60666212861 has 2 divisors, whose sum is σ = 60666212862. Its totient is φ = 60666212860.

The previous prime is 60666212857. The next prime is 60666212881. The reversal of 60666212861 is 16821266606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49364396761 + 11301816100 = 222181^2 + 106310^2 .

It is a cyclic number.

It is not a de Polignac number, because 60666212861 - 2² = 60666212857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60666212881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30333106430 + 30333106431.

It is an arithmetic number, because the mean of its divisors is an integer number (30333106431).

Almost surely, 2^60666212861 is an apocalyptic number.

It is an amenable number.

60666212861 is a deficient number, since it is larger than the sum of its proper divisors (1).

60666212861 is an equidigital number, since it uses as much as digits as its factorization.

60666212861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 60666212861 in words is "sixty billion, six hundred sixty-six million, two hundred twelve thousand, eight hundred sixty-one".