623443644306 has 24 divisors (see below), whose sum is σ = 1543765214784. Its totient is φ = 178126755480.

The previous prime is 623443644253. The next prime is 623443644319. The reversal of 623443644306 is 603446344326.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2473982590 + ... + 2473982841.

It is an arithmetic number, because the mean of its divisors is an integer number (64323550616).

Almost surely, 2^623443644306 is an apocalyptic number.

623443644306 is an abundant number, since it is smaller than the sum of its proper divisors (920321570478).

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

623443644306 is a wasteful number, since it uses less digits than its factorization.

623443644306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947965446 (or 4947965443 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 45.

The spelling of 623443644306 in words is "six hundred twenty-three billion, four hundred forty-three million, six hundred forty-four thousand, three hundred six".