55748140188 has 144 divisors (see below), whose sum is σ = 151673679360. Its totient is φ = 15870047232.

The previous prime is 55748140187. The next prime is 55748140207. The reversal of 55748140188 is 88104184755.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 55748140188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55748140187) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2020381 + ... + 2047787.

It is an arithmetic number, because the mean of its divisors is an integer number (1053289440).

Almost surely, 2^55748140188 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 55748140188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75836839680).

55748140188 is an abundant number, since it is smaller than the sum of its proper divisors (95925539172).

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

55748140188 is a wasteful number, since it uses less digits than its factorization.

55748140188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27516 (or 27501 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 51.

The spelling of 55748140188 in words is "fifty-five billion, seven hundred forty-eight million, one hundred forty thousand, one hundred eighty-eight".