220742530432 has 64 divisors (see below), whose sum is σ = 454258285200. Its totient is φ = 106767120384.

The previous prime is 220742530399. The next prime is 220742530441. The reversal of 220742530432 is 234035247022.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×220742530432² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684619 + ... + 954037.

Almost surely, 2^220742530432 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 220742530432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227129142600).

220742530432 is an abundant number, since it is smaller than the sum of its proper divisors (233515754768).

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

220742530432 is a wasteful number, since it uses less digits than its factorization.

220742530432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269643 (or 269631 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 34.

Adding to 220742530432 its reverse (234035247022), we get a palindrome (454777777454).

The spelling of 220742530432 in words is "two hundred twenty billion, seven hundred forty-two million, five hundred thirty thousand, four hundred thirty-two".