673320106640 has 80 divisors (see below), whose sum is σ = 1659643299840. Its totient is φ = 253595681280.

The previous prime is 673320106601. The next prime is 673320106643. The reversal of 673320106640 is 46601023376.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 673320106594 and 673320106603.

It is not an unprimeable number, because it can be changed into a prime (673320106643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3577160 + ... + 3760679.

It is an arithmetic number, because the mean of its divisors is an integer number (20745541248).

Almost surely, 2^673320106640 is an apocalyptic number.

It is an amenable number.

673320106640 is an abundant number, since it is smaller than the sum of its proper divisors (986323193200).

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

673320106640 is a wasteful number, since it uses less digits than its factorization.

673320106640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7337920 (or 7337914 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

The spelling of 673320106640 in words is "six hundred seventy-three billion, three hundred twenty million, one hundred six thousand, six hundred forty".