623434216244 has 72 divisors (see below), whose sum is σ = 1283387418432. Its totient is φ = 259577602560.

The previous prime is 623434216241. The next prime is 623434216261. The reversal of 623434216244 is 442612434326.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623434216241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26475644 + ... + 26499180.

It is an arithmetic number, because the mean of its divisors is an integer number (17824825256).

Almost surely, 2^623434216244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623434216244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641693709216).

623434216244 is an abundant number, since it is smaller than the sum of its proper divisors (659953202188).

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

623434216244 is a wasteful number, since it uses less digits than its factorization.

623434216244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24313 (or 24274 counting only the distinct ones).

The product of its digits is 663552, while the sum is 41.

The spelling of 623434216244 in words is "six hundred twenty-three billion, four hundred thirty-four million, two hundred sixteen thousand, two hundred forty-four".