623944561790 has 16 divisors (see below), whose sum is σ = 1225200230640. Its totient is φ = 226888931520.

The previous prime is 623944561789. The next prime is 623944561813. The reversal of 623944561790 is 97165449326.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836111535 + ... + 2836111754.

It is an arithmetic number, because the mean of its divisors is an integer number (76575014415).

Almost surely, 2^623944561790 is an apocalyptic number.

623944561790 is a deficient number, since it is larger than the sum of its proper divisors (601255668850).

623944561790 is a wasteful number, since it uses less digits than its factorization.

623944561790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5672223307.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 623944561790 in words is "six hundred twenty-three billion, nine hundred forty-four million, five hundred sixty-one thousand, seven hundred ninety".