55631123232 has 96 divisors (see below), whose sum is σ = 147113366400. Its totient is φ = 18406748160.

The previous prime is 55631123231. The next prime is 55631123239. The reversal of 55631123232 is 23232113655.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 55631123193 and 55631123202.

It is not an unprimeable number, because it can be changed into a prime (55631123231) 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, 10301269 + ... + 10306667.

It is an arithmetic number, because the mean of its divisors is an integer number (1532430900).

Almost surely, 2^55631123232 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 55631123232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73556683200).

55631123232 is an abundant number, since it is smaller than the sum of its proper divisors (91482243168).

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

55631123232 is a wasteful number, since it uses less digits than its factorization.

55631123232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186 (or 6178 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

Adding to 55631123232 its reverse (23232113655), we get a palindrome (78863236887).

The spelling of 55631123232 in words is "fifty-five billion, six hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-two".