55500143840 has 96 divisors (see below), whose sum is σ = 132696851616. Its totient is φ = 21934540800.

The previous prime is 55500143837. The next prime is 55500143879. The reversal of 55500143840 is 4834100555.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55500143840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4505690 + ... + 4517990.

It is an arithmetic number, because the mean of its divisors is an integer number (1382258871).

Almost surely, 2^55500143840 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 55500143840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66348425808).

55500143840 is an abundant number, since it is smaller than the sum of its proper divisors (77196707776).

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

55500143840 is a wasteful number, since it uses less digits than its factorization.

55500143840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12652 (or 12644 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 55500143840 in words is "fifty-five billion, five hundred million, one hundred forty-three thousand, eight hundred forty".