55310551368 has 128 divisors (see below), whose sum is σ = 144618480000. Its totient is φ = 17606356992.

The previous prime is 55310551367. The next prime is 55310551391. The reversal of 55310551368 is 86315501355.

It is not an unprimeable number, because it can be changed into a prime (55310551367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25978528 + ... + 25980656.

It is an arithmetic number, because the mean of its divisors is an integer number (1129831875).

Almost surely, 2^55310551368 is an apocalyptic number.

55310551368 is a gapful number since it is divisible by the number (58) 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 55310551368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72309240000).

55310551368 is an abundant number, since it is smaller than the sum of its proper divisors (89307928632).

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

55310551368 is a wasteful number, since it uses less digits than its factorization.

55310551368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 55310551368 in words is "fifty-five billion, three hundred ten million, five hundred fifty-one thousand, three hundred sixty-eight".