66466200404 has 12 divisors (see below), whose sum is σ = 116386058964. Its totient is φ = 33213040704.

The previous prime is 66466200391. The next prime is 66466200421. The reversal of 66466200404 is 40400266466.

It can be written as a sum of positive squares in 2 ways, for example, as 21054590404 + 45411610000 = 145102^2 + 213100^2 .

It is a super-2 number, since 2×66466200404² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5007419 + ... + 5020674.

It is an arithmetic number, because the mean of its divisors is an integer number (9698838247).

Almost surely, 2^66466200404 is an apocalyptic number.

It is an amenable number.

66466200404 is a deficient number, since it is larger than the sum of its proper divisors (49919858560).

66466200404 is a wasteful number, since it uses less digits than its factorization.

66466200404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10029754 (or 10029752 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 66466200404 in words is "sixty-six billion, four hundred sixty-six million, two hundred thousand, four hundred four".