66807634294 has 4 divisors (see below), whose sum is σ = 100211451444. Its totient is φ = 33403817146.

The previous prime is 66807634279. The next prime is 66807634307. The reversal of 66807634294 is 49243670866.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16701908572 + ... + 16701908575.

It is an arithmetic number, because the mean of its divisors is an integer number (25052862861).

Almost surely, 2^66807634294 is an apocalyptic number.

66807634294 is a deficient number, since it is larger than the sum of its proper divisors (33403817150).

66807634294 is a wasteful number, since it uses less digits than its factorization.

66807634294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33403817149.

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 66807634294 in words is "sixty-six billion, eight hundred seven million, six hundred thirty-four thousand, two hundred ninety-four".