220161540450 has 96 divisors (see below), whose sum is σ = 579074793984. Its totient is φ = 55164810240.

The previous prime is 220161540427. The next prime is 220161540479. The reversal of 220161540450 is 54045161022.

It is a super-2 number, since 2×220161540450² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1476732 + ... + 1618968.

It is an arithmetic number, because the mean of its divisors is an integer number (6032029104).

Almost surely, 2^220161540450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220161540450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289537396992).

220161540450 is an abundant number, since it is smaller than the sum of its proper divisors (358913253534).

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

220161540450 is a wasteful number, since it uses less digits than its factorization.

220161540450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142876 (or 142871 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 220161540450 in words is "two hundred twenty billion, one hundred sixty-one million, five hundred forty thousand, four hundred fifty".