55412551012 has 72 divisors (see below), whose sum is σ = 121633921080. Its totient is φ = 21893921280.

The previous prime is 55412550971. The next prime is 55412551013. The reversal of 55412551012 is 21015521455.

It can be written as a sum of positive squares in 4 ways, for example, as 218566656 + 55193984356 = 14784^2 + 234934^2 .

It is not an unprimeable number, because it can be changed into a prime (55412551013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2078664 + ... + 2105152.

It is an arithmetic number, because the mean of its divisors is an integer number (1689360015).

Almost surely, 2^55412551012 is an apocalyptic number.

55412551012 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 55412551012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60816960540).

55412551012 is an abundant number, since it is smaller than the sum of its proper divisors (66221370068).

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

55412551012 is a wasteful number, since it uses less digits than its factorization.

55412551012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27341 (or 27332 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 55412551012 in words is "fifty-five billion, four hundred twelve million, five hundred fifty-one thousand, twelve".