66885231098 has 32 divisors (see below), whose sum is σ = 119689353216. Its totient is φ = 27408770928.

The previous prime is 66885231097. The next prime is 66885231157. The reversal of 66885231098 is 89013258866.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 878915 + ... + 951977.

It is an arithmetic number, because the mean of its divisors is an integer number (3740292288).

Almost surely, 2^66885231098 is an apocalyptic number.

66885231098 is a deficient number, since it is larger than the sum of its proper divisors (52804122118).

66885231098 is a wasteful number, since it uses less digits than its factorization.

66885231098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75938.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 66885231098 in words is "sixty-six billion, eight hundred eighty-five million, two hundred thirty-one thousand, ninety-eight".