55489697000 has 64 divisors (see below), whose sum is σ = 130068469440. Its totient is φ = 22157832000.

The previous prime is 55489696979. The next prime is 55489697023. The reversal of 55489697000 is 79698455.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539735 + ... + 634265.

It is an arithmetic number, because the mean of its divisors is an integer number (2032319835).

Almost surely, 2^55489697000 is an apocalyptic number.

55489697000 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 55489697000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65034234720).

55489697000 is an abundant number, since it is smaller than the sum of its proper divisors (74578772440).

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

55489697000 is a wasteful number, since it uses less digits than its factorization.

55489697000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95139 (or 95125 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 55489697000 in words is "fifty-five billion, four hundred eighty-nine million, six hundred ninety-seven thousand".