66526062260 has 72 divisors (see below), whose sum is σ = 172073336904. Its totient is φ = 21467228160.

The previous prime is 66526062223. The next prime is 66526062283. The reversal of 66526062260 is 6226062566.

It can be written as a sum of positive squares in 4 ways, for example, as 18010713616 + 48515348644 = 134204^2 + 220262^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1979921 + ... + 2013240.

It is an arithmetic number, because the mean of its divisors is an integer number (2389907457).

Almost surely, 2^66526062260 is an apocalyptic number.

It is an amenable number.

66526062260 is an abundant number, since it is smaller than the sum of its proper divisors (105547274644).

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

66526062260 is a wasteful number, since it uses less digits than its factorization.

66526062260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993201 (or 3993192 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 66526062260 in words is "sixty-six billion, five hundred twenty-six million, sixty-two thousand, two hundred sixty".