55012214140 has 72 divisors (see below), whose sum is σ = 125290162368. Its totient is φ = 20280648960.

The previous prime is 55012214137. The next prime is 55012214189. The reversal of 55012214140 is 4141221055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2221869 + ... + 2246491.

It is an arithmetic number, because the mean of its divisors is an integer number (1740141144).

Almost surely, 2^55012214140 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 55012214140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62645081184).

55012214140 is an abundant number, since it is smaller than the sum of its proper divisors (70277948228).

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

55012214140 is a wasteful number, since it uses less digits than its factorization.

55012214140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25319 (or 25304 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 55012214140 its reverse (4141221055), we get a palindrome (59153435195).

The spelling of 55012214140 in words is "fifty-five billion, twelve million, two hundred fourteen thousand, one hundred forty".