623240042291 has 16 divisors (see below), whose sum is σ = 665740608000. Its totient is φ = 581766945408.

The previous prime is 623240042287. The next prime is 623240042317. The reversal of 623240042291 is 192240042326.

It is a cyclic number.

It is not a de Polignac number, because 623240042291 - 2² = 623240042287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623240042251) 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, 410726 + ... + 1189611.

It is an arithmetic number, because the mean of its divisors is an integer number (41608788000).

Almost surely, 2^623240042291 is an apocalyptic number.

623240042291 is a deficient number, since it is larger than the sum of its proper divisors (42500565709).

623240042291 is a wasteful number, since it uses less digits than its factorization.

623240042291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600658.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 623240042291 its sum of digits (35), we get a palindrome (623240042326).

The spelling of 623240042291 in words is "six hundred twenty-three billion, two hundred forty million, forty-two thousand, two hundred ninety-one".