55012020352 has 64 divisors (see below), whose sum is σ = 111078000000. Its totient is φ = 27134235648.

The previous prime is 55012020347. The next prime is 55012020353. The reversal of 55012020352 is 25302021055.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (55012020353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20010274 + ... + 20013022.

It is an arithmetic number, because the mean of its divisors is an integer number (1735593750).

Almost surely, 2^55012020352 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 55012020352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55539000000).

55012020352 is an abundant number, since it is smaller than the sum of its proper divisors (56065979648).

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

55012020352 is a wasteful number, since it uses less digits than its factorization.

55012020352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821 (or 4809 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 55012020352 in words is "fifty-five billion, twelve million, twenty thousand, three hundred fifty-two".