66885231096 has 48 divisors (see below), whose sum is σ = 182095954560. Its totient is φ = 22178344320.

The previous prime is 66885231079. The next prime is 66885231097. The reversal of 66885231096 is 69013258866.

It is a happy number.

66885231096 is a `hidden beast` number, since 6 + 6 + 8 + 8 + 523 + 109 + 6 = 666.

It is a super-2 number, since 2×66885231096² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66885231097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2418085 + ... + 2445588.

It is an arithmetic number, because the mean of its divisors is an integer number (3793665720).

Almost surely, 2^66885231096 is an apocalyptic number.

It is an amenable number.

66885231096 is an abundant number, since it is smaller than the sum of its proper divisors (115210723464).

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

66885231096 is a wasteful number, since it uses less digits than its factorization.

66885231096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863876 (or 4863869 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 66885231096 in words is "sixty-six billion, eight hundred eighty-five million, two hundred thirty-one thousand, ninety-six".