66522522560 has 112 divisors (see below), whose sum is σ = 170687829312. Its totient is φ = 24548352000.

The previous prime is 66522522551. The next prime is 66522522601. The reversal of 66522522560 is 6522522566.

66522522560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10151285 + ... + 10157835.

It is an arithmetic number, because the mean of its divisors is an integer number (1523998476).

Almost surely, 2^66522522560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66522522560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85343914656).

66522522560 is an abundant number, since it is smaller than the sum of its proper divisors (104165306752).

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

66522522560 is a wasteful number, since it uses less digits than its factorization.

66522522560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022 (or 9012 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 66522522560 in words is "sixty-six billion, five hundred twenty-two million, five hundred twenty-two thousand, five hundred sixty".