55213751208 has 256 divisors, whose sum is σ = 176919552000. Its totient is φ = 13943255040.

The previous prime is 55213751207. The next prime is 55213751249. The reversal of 55213751208 is 80215731255.

It is not an unprimeable number, because it can be changed into a prime (55213751207) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13634368 + ... + 13638416.

It is an arithmetic number, because the mean of its divisors is an integer number (691092000).

Almost surely, 2^55213751208 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 55213751208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88459776000).

55213751208 is an abundant number, since it is smaller than the sum of its proper divisors (121705800792).

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

55213751208 is a wasteful number, since it uses less digits than its factorization.

55213751208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 55213751208 in words is "fifty-five billion, two hundred thirteen million, seven hundred fifty-one thousand, two hundred eight".