55131332004 has 144 divisors (see below), whose sum is σ = 162502179840. Its totient is φ = 15433744320.

The previous prime is 55131331973. The next prime is 55131332021. The reversal of 55131332004 is 40023313155.

55131332004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4617987 + ... + 4629909.

It is an arithmetic number, because the mean of its divisors is an integer number (1128487360).

Almost surely, 2^55131332004 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 55131332004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81251089920).

55131332004 is an abundant number, since it is smaller than the sum of its proper divisors (107370847836).

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

55131332004 is a wasteful number, since it uses less digits than its factorization.

55131332004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12305 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 55131332004 its reverse (40023313155), we get a palindrome (95154645159).

The spelling of 55131332004 in words is "fifty-five billion, one hundred thirty-one million, three hundred thirty-two thousand, four".