66763020806 has 8 divisors (see below), whose sum is σ = 106035386040. Its totient is φ = 31417892128.

The previous prime is 66763020769. The next prime is 66763020829. The reversal of 66763020806 is 60802036766.

66763020806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981809096 + ... + 981809163.

It is an arithmetic number, because the mean of its divisors is an integer number (13254423255).

Almost surely, 2^66763020806 is an apocalyptic number.

66763020806 is a deficient number, since it is larger than the sum of its proper divisors (39272365234).

66763020806 is a wasteful number, since it uses less digits than its factorization.

66763020806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963618278.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 66763020806 in words is "sixty-six billion, seven hundred sixty-three million, twenty thousand, eight hundred six".