66846499464866 has 8 divisors (see below), whose sum is σ = 109385180942544. Its totient is φ = 30384772484020.

The previous prime is 66846499464821. The next prime is 66846499464883.

66846499464866 is nontrivially palindromic in base 10.

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

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, 1519238624180 + ... + 1519238624223.

It is an arithmetic number, because the mean of its divisors is an integer number (13673147617818).

Almost surely, 2^{66846499464866} is an apocalyptic number.

66846499464866 is a deficient number, since it is larger than the sum of its proper divisors (42538681477678).

66846499464866 is a wasteful number, since it uses less digits than its factorization.

66846499464866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038477248416.

The product of its digits is 61917364224, while the sum is 86.

The spelling of 66846499464866 in words is "sixty-six trillion, eight hundred forty-six billion, four hundred ninety-nine million, four hundred sixty-four thousand, eight hundred sixty-six".