66796799999 has 8 divisors (see below), whose sum is σ = 69103069920. Its totient is φ = 64490725600.

The previous prime is 66796799989. The next prime is 66796800019. The reversal of 66796799999 is 99999769766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66796799999 - 2⁴ = 66796799983 is a prime.

It is a super-3 number, since 3×66796799999³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66796799999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66796799989) 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, 1121429 + ... + 1179489.

It is an arithmetic number, because the mean of its divisors is an integer number (8637883740).

Almost surely, 2^66796799999 is an apocalyptic number.

66796799999 is a deficient number, since it is larger than the sum of its proper divisors (2306269921).

66796799999 is a wasteful number, since it uses less digits than its factorization.

66796799999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97761.

The product of its digits is 5624771544, while the sum is 86.

The spelling of 66796799999 in words is "sixty-six billion, seven hundred ninety-six million, seven hundred ninety-nine thousand, nine hundred ninety-nine".