66888866886688 has 96 divisors (see below), whose sum is σ = 165130792767360. Its totient is φ = 25909958031360.

The previous prime is 66888866886551. The next prime is 66888866886707. The reversal of 66888866886688 is 88668866888866.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66888866886593 and 66888866886602.

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, 78031693 + ... + 78884236.

It is an arithmetic number, because the mean of its divisors is an integer number (1720112424660).

It is a self-describing number.

Almost surely, 2^{66888866886688} is an apocalyptic number.

It is an amenable number.

66888866886688 is an abundant number, since it is smaller than the sum of its proper divisors (98241925880672).

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

66888866886688 is a wasteful number, since it uses less digits than its factorization.

66888866886688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156916130 (or 156916122 counting only the distinct ones).

The product of its digits is 782757789696, while the sum is 100.

It can be divided in two parts, 668888 and 66886688, that added together give a palindrome (67555576).

The spelling of 66888866886688 in words is "sixty-six trillion, eight hundred eighty-eight billion, eight hundred sixty-six million, eight hundred eighty-six thousand, six hundred eighty-eight".