66031848999 has 8 divisors (see below), whose sum is σ = 97824961520. Its totient is φ = 44021232648.

The previous prime is 66031848991. The next prime is 66031849003. The reversal of 66031848999 is 99984813066.

It is a happy number.

66031848999 is a `hidden beast` number, since 6 + 60 + 3 + 1 + 8 + 489 + 99 = 666.

It is not a de Polignac number, because 66031848999 - 2³ = 66031848991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66031848991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222811992 + ... + 1222812045.

It is an arithmetic number, because the mean of its divisors is an integer number (12228120190).

Almost surely, 2^66031848999 is an apocalyptic number.

66031848999 is a deficient number, since it is larger than the sum of its proper divisors (31793112521).

66031848999 is a wasteful number, since it uses less digits than its factorization.

66031848999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445624046 (or 2445624040 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 66031848999 in words is "sixty-six billion, thirty-one million, eight hundred forty-eight thousand, nine hundred ninety-nine".