55840337280 has 1920 divisors, whose sum is σ = 265920732000. Its totient is φ = 11036196864.

The previous prime is 55840337269. The next prime is 55840337281. The reversal of 55840337280 is 8273304855.

55840337280 is a `hidden beast` number, since 558 + 40 + 3 + 37 + 28 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55840337281) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 627419476 + ... + 627419564.

Almost surely, 2^55840337280 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 55840337280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132960366000).

55840337280 is an abundant number, since it is smaller than the sum of its proper divisors (210080394720).

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

55840337280 is a wasteful number, since it uses less digits than its factorization.

55840337280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 55840337280 in words is "fifty-five billion, eight hundred forty million, three hundred thirty-seven thousand, two hundred eighty".