623420545432 has 16 divisors (see below), whose sum is σ = 1168937306640. Its totient is φ = 311703930336.

The previous prime is 623420545361. The next prime is 623420545439. The reversal of 623420545432 is 234545024326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623420545439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361228 + ... + 1173595.

It is an arithmetic number, because the mean of its divisors is an integer number (73058581665).

Almost surely, 2^623420545432 is an apocalyptic number.

It is an amenable number.

623420545432 is a deficient number, since it is larger than the sum of its proper divisors (545516761208).

623420545432 is a wasteful number, since it uses less digits than its factorization.

623420545432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585602 (or 1585598 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 623420545432 its reverse (234545024326), we get a palindrome (857965569758).

The spelling of 623420545432 in words is "six hundred twenty-three billion, four hundred twenty million, five hundred forty-five thousand, four hundred thirty-two".