55748820771840 has 528 divisors, whose sum is σ = 207486005516352. Its totient is φ = 12738582872064.

The previous prime is 55748820771823. The next prime is 55748820771869. The reversal of 55748820771840 is 4817702884755.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2862280182 + ... + 2862299658.

Almost surely, 2^{55748820771840} 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 55748820771840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103743002758176).

55748820771840 is an abundant number, since it is smaller than the sum of its proper divisors (151737184744512).

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

55748820771840 is a wasteful number, since it uses less digits than its factorization.

55748820771840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23322 (or 23297 counting only the distinct ones).

The product of its (nonzero) digits is 140492800, while the sum is 66.

The spelling of 55748820771840 in words is "fifty-five trillion, seven hundred forty-eight billion, eight hundred twenty million, seven hundred seventy-one thousand, eight hundred forty".