12023405544 has 16 divisors (see below), whose sum is σ = 30058513920. Its totient is φ = 4007801840.

The previous prime is 12023405489. The next prime is 12023405551. The reversal of 12023405544 is 44550432021.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250487592 + ... + 250487639.

It is an arithmetic number, because the mean of its divisors is an integer number (1878657120).

Almost surely, 2^12023405544 is an apocalyptic number.

It is an amenable number.

12023405544 is an abundant number, since it is smaller than the sum of its proper divisors (18035108376).

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

12023405544 is a wasteful number, since it uses less digits than its factorization.

12023405544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500975240 (or 500975236 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 12023405544 its reverse (44550432021), we get a palindrome (56573837565).

The spelling of 12023405544 in words is "twelve billion, twenty-three million, four hundred five thousand, five hundred forty-four".