66626114856 has 128 divisors (see below), whose sum is σ = 203776128000. Its totient is φ = 17728422912.

The previous prime is 66626114809. The next prime is 66626114881. The reversal of 66626114856 is 65841162666.

It is a happy number.

66626114856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66626114799 and 66626114808.

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, 11440 + ... + 365216.

It is an arithmetic number, because the mean of its divisors is an integer number (1592001000).

Almost surely, 2^66626114856 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 66626114856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101888064000).

66626114856 is an abundant number, since it is smaller than the sum of its proper divisors (137150013144).

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

66626114856 is a wasteful number, since it uses less digits than its factorization.

66626114856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353871 (or 353867 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The spelling of 66626114856 in words is "sixty-six billion, six hundred twenty-six million, one hundred fourteen thousand, eight hundred fifty-six".