646693424112 has 20 divisors (see below), whose sum is σ = 1670624679080. Its totient is φ = 215564474688.

The previous prime is 646693424081. The next prime is 646693424141. The reversal of 646693424112 is 211424396646.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 13472779669 = 646693424112 / (6 + 4 + 6 + 6 + 9 + 3 + 4 + 2 + 4 + 1 + 1 + 2).

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, 6736389787 + ... + 6736389882.

It is an arithmetic number, because the mean of its divisors is an integer number (83531233954).

Almost surely, 2^646693424112 is an apocalyptic number.

It is an amenable number.

646693424112 is an abundant number, since it is smaller than the sum of its proper divisors (1023931254968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646693424112 is a wasteful number, since it uses less digits than its factorization.

646693424112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472779680 (or 13472779674 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 48.

The spelling of 646693424112 in words is "six hundred forty-six billion, six hundred ninety-three million, four hundred twenty-four thousand, one hundred twelve".