55001661150 has 96 divisors (see below), whose sum is σ = 137387456640. Its totient is φ = 14561653120.

The previous prime is 55001661131. The next prime is 55001661151. The reversal of 55001661150 is 5116610055.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55001661151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22203712 + ... + 22206188.

It is an arithmetic number, because the mean of its divisors is an integer number (1431119340).

Almost surely, 2^55001661150 is an apocalyptic number.

55001661150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55001661150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68693728320).

55001661150 is an abundant number, since it is smaller than the sum of its proper divisors (82385795490).

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

55001661150 is a wasteful number, since it uses less digits than its factorization.

55001661150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498 (or 3493 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 55001661150 in words is "fifty-five billion, one million, six hundred sixty-one thousand, one hundred fifty".