55750266732240 has 480 divisors, whose sum is σ = 198820907790336. Its totient is φ = 13978238238720.

The previous prime is 55750266732217. The next prime is 55750266732247. The reversal of 55750266732240 is 4223766205755.

55750266732240 is a `hidden beast` number, since 5 + 5 + 7 + 50 + 266 + 7 + 322 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55750266732247) 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, 143524524 + ... + 143912436.

Almost surely, 2^{55750266732240} 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 55750266732240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99410453895168).

55750266732240 is an abundant number, since it is smaller than the sum of its proper divisors (143070641058096).

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

55750266732240 is a wasteful number, since it uses less digits than its factorization.

55750266732240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388147 (or 388138 counting only the distinct ones).

The product of its (nonzero) digits is 21168000, while the sum is 54.

It can be divided in two parts, 55750266 and 732240, that added together give a triangular number (56482506 = T₁₀₆₂₈).

The spelling of 55750266732240 in words is "fifty-five trillion, seven hundred fifty billion, two hundred sixty-six million, seven hundred thirty-two thousand, two hundred forty".