55599243000 has 256 divisors, whose sum is σ = 201505674240. Its totient is φ = 12499776000.

The previous prime is 55599242989. The next prime is 55599243041. The reversal of 55599243000 is 34299555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1259299 + ... + 1302701.

It is an arithmetic number, because the mean of its divisors is an integer number (787131540).

Almost surely, 2^55599243000 is an apocalyptic number.

55599243000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55599243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100752837120).

55599243000 is an abundant number, since it is smaller than the sum of its proper divisors (145906431240).

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

55599243000 is a wasteful number, since it uses less digits than its factorization.

55599243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43495 (or 43481 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 55599243000 in words is "fifty-five billion, five hundred ninety-nine million, two hundred forty-three thousand".