55845299745720 has 384 divisors, whose sum is σ = 194118494768640. Its totient is φ = 13898083368960.

The previous prime is 55845299745679. The next prime is 55845299745721. The reversal of 55845299745720 is 2754799254855.

It is a happy number.

55845299745720 is a `hidden beast` number, since 5 + 5 + 8 + 4 + 529 + 9 + 74 + 5 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55845299745721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46061532 + ... + 47258388.

It is an arithmetic number, because the mean of its divisors is an integer number (505516913460).

Almost surely, 2^{55845299745720} 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 55845299745720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97059247384320).

55845299745720 is an abundant number, since it is smaller than the sum of its proper divisors (138273195022920).

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

55845299745720 is a wasteful number, since it uses less digits than its factorization.

55845299745720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197055 (or 1197048 counting only the distinct ones).

The product of its (nonzero) digits is 1270080000, while the sum is 72.

The spelling of 55845299745720 in words is "fifty-five trillion, eight hundred forty-five billion, two hundred ninety-nine million, seven hundred forty-five thousand, seven hundred twenty".