32220134640 has 200 divisors, whose sum is σ = 117795503760. Its totient is φ = 8139792384.

The previous prime is 32220134603. The next prime is 32220134717. The reversal of 32220134640 is 4643102223.

32220134640 is a `hidden beast` number, since 3 + 2 + 2 + 2 + 0 + 13 + 4 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7729 + ... + 253968.

Almost surely, 2^32220134640 is an apocalyptic number.

32220134640 is a gapful number since it is divisible by the number (30) 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 32220134640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58897751880).

32220134640 is an abundant number, since it is smaller than the sum of its proper divisors (85575369120).

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

32220134640 is a wasteful number, since it uses less digits than its factorization.

32220134640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261741 (or 261726 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 32220134640 its reverse (4643102223), we get a palindrome (36863236863).

The spelling of 32220134640 in words is "thirty-two billion, two hundred twenty million, one hundred thirty-four thousand, six hundred forty".