66526313204 has 24 divisors (see below), whose sum is σ = 125388054120. Its totient is φ = 30701625984.

The previous prime is 66526313201. The next prime is 66526313213. The reversal of 66526313204 is 40231362566.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3298204900 + 63228108304 = 57430^2 + 251452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66526313201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576842 + ... + 682494.

It is an arithmetic number, because the mean of its divisors is an integer number (5224502255).

Almost surely, 2^66526313204 is an apocalyptic number.

It is an amenable number.

66526313204 is a deficient number, since it is larger than the sum of its proper divisors (58861740916).

66526313204 is a wasteful number, since it uses less digits than its factorization.

66526313204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117779 (or 117777 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 66526313204 in words is "sixty-six billion, five hundred twenty-six million, three hundred thirteen thousand, two hundred four".