32253550440 has 128 divisors (see below), whose sum is σ = 101072793600. Its totient is φ = 8218425600.

The previous prime is 32253550429. The next prime is 32253550447. The reversal of 32253550440 is 4405535223.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (32253550447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2895201 + ... + 2906319.

It is an arithmetic number, because the mean of its divisors is an integer number (789631200).

Almost surely, 2^32253550440 is an apocalyptic number.

32253550440 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 32253550440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50536396800).

32253550440 is an abundant number, since it is smaller than the sum of its proper divisors (68819243160).

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

32253550440 is a wasteful number, since it uses less digits than its factorization.

32253550440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207 (or 12203 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 33.

The spelling of 32253550440 in words is "thirty-two billion, two hundred fifty-three million, five hundred fifty thousand, four hundred forty".