660262262262066 has 64 divisors (see below), whose sum is σ = 1548751447881600. Its totient is φ = 208503872176320.

The previous prime is 660262262262007. The next prime is 660262262262079.

660262262262066 is a `hidden beast` number, since 6 + 6 + 0 + 2 + 6 + 2 + 2 + 6 + 2 + 2 + 620 + 6 + 6 = 666.

660262262262066 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 890946055 + ... + 891686826.

It is an arithmetic number, because the mean of its divisors is an integer number (24199241373150).

Almost surely, 2^{660262262262066} is an apocalyptic number.

660262262262066 is an abundant number, since it is smaller than the sum of its proper divisors (888489185619534).

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

660262262262066 is a wasteful number, since it uses less digits than its factorization.

660262262262066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782632949 (or 1782632905 counting only the distinct ones).

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

The spelling of 660262262262066 in words is "six hundred sixty trillion, two hundred sixty-two billion, two hundred sixty-two million, two hundred sixty-two thousand, sixty-six".