55431423012 has 96 divisors (see below), whose sum is σ = 148441595904. Its totient is φ = 15770793600.

The previous prime is 55431422983. The next prime is 55431423017. The reversal of 55431423012 is 21032413455.

55431423012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55431423017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30272937 + ... + 30274767.

It is an arithmetic number, because the mean of its divisors is an integer number (1546266624).

Almost surely, 2^55431423012 is an apocalyptic number.

It is an amenable number.

55431423012 is an abundant number, since it is smaller than the sum of its proper divisors (93010172892).

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

55431423012 is a wasteful number, since it uses less digits than its factorization.

55431423012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169 (or 3167 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 55431423012 its reverse (21032413455), we get a palindrome (76463836467).

The spelling of 55431423012 in words is "fifty-five billion, four hundred thirty-one million, four hundred twenty-three thousand, twelve".