66900034049 has 8 divisors (see below), whose sum is σ = 66974479488. Its totient is φ = 66825625680.

The previous prime is 66900034043. The next prime is 66900034067. The reversal of 66900034049 is 94043000966.

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 66900034049 - 2²⁰ = 66898985473 is a prime.

It is a super-2 number, since 2×66900034049² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66900033997 and 66900034015.

It is not an unprimeable number, because it can be changed into a prime (66900034043) 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, 5013224 + ... + 5026550.

It is an arithmetic number, because the mean of its divisors is an integer number (8371809936).

Almost surely, 2^66900034049 is an apocalyptic number.

It is an amenable number.

66900034049 is a deficient number, since it is larger than the sum of its proper divisors (74445439).

66900034049 is a wasteful number, since it uses less digits than its factorization.

66900034049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18535.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 66900034049 in words is "sixty-six billion, nine hundred million, thirty-four thousand, forty-nine".