55133415012 has 96 divisors (see below), whose sum is σ = 140696075520. Its totient is φ = 16700866560.

The previous prime is 55133414929. The next prime is 55133415017. The reversal of 55133415012 is 21051433155.

It is not an unprimeable number, because it can be changed into a prime (55133415017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8514208 + ... + 8520680.

It is an arithmetic number, because the mean of its divisors is an integer number (1465584120).

Almost surely, 2^55133415012 is an apocalyptic number.

55133415012 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55133415012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70348037760).

55133415012 is an abundant number, since it is smaller than the sum of its proper divisors (85562660508).

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

55133415012 is a wasteful number, since it uses less digits than its factorization.

55133415012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7333 (or 7331 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 55133415012 its reverse (21051433155), we get a palindrome (76184848167).

The spelling of 55133415012 in words is "fifty-five billion, one hundred thirty-three million, four hundred fifteen thousand, twelve".