66705602494 has 8 divisors (see below), whose sum is σ = 100064001600. Its totient is φ = 33350935296.

The previous prime is 66705602471. The next prime is 66705602497. The reversal of 66705602494 is 49420650766.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66705602497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887854 + ... + 960049.

It is an arithmetic number, because the mean of its divisors is an integer number (12508000200).

Almost surely, 2^66705602494 is an apocalyptic number.

66705602494 is a deficient number, since it is larger than the sum of its proper divisors (33358399106).

66705602494 is a wasteful number, since it uses less digits than its factorization.

66705602494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865954.

The product of its (nonzero) digits is 2177280, while the sum is 49.

The spelling of 66705602494 in words is "sixty-six billion, seven hundred five million, six hundred two thousand, four hundred ninety-four".