66020266226466 has 12 divisors (see below), whose sum is σ = 143043910157382. Its totient is φ = 22006755408816.

The previous prime is 66020266226449. The next prime is 66020266226503. The reversal of 66020266226466 is 66462266202066.

66020266226466 is a `hidden beast` number, since 6 + 6 + 0 + 2 + 0 + 2 + 6 + 622 + 6 + 4 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56497456557441 + 9522809669025 = 7516479^2 + 3085905^2 .

It is a super-2 number, since 2×66020266226466² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1833896284051 + ... + 1833896284086.

Almost surely, 2^{66020266226466} is an apocalyptic number.

66020266226466 is an abundant number, since it is smaller than the sum of its proper divisors (77023643930916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66020266226466 is a wasteful number, since it uses less digits than its factorization.

66020266226466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667792568145 (or 3667792568142 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 54.

The spelling of 66020266226466 in words is "sixty-six trillion, twenty billion, two hundred sixty-six million, two hundred twenty-six thousand, four hundred sixty-six".