66802837863 has 8 divisors (see below), whose sum is σ = 89071676800. Its totient is φ = 44534612088.

The previous prime is 66802837847. The next prime is 66802837879. The reversal of 66802837863 is 36873820866.

It is an interprime number because it is at equal distance from previous prime (66802837847) and next prime (66802837879).

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

It is not a de Polignac number, because 66802837863 - 2⁴ = 66802837847 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 (66802837763) 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, 260478 + ... + 448836.

It is an arithmetic number, because the mean of its divisors is an integer number (11133959600).

Almost surely, 2^66802837863 is an apocalyptic number.

66802837863 is a deficient number, since it is larger than the sum of its proper divisors (22268838937).

66802837863 is a wasteful number, since it uses less digits than its factorization.

66802837863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306581.

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 66802837863 in words is "sixty-six billion, eight hundred two million, eight hundred thirty-seven thousand, eight hundred sixty-three".