32644614420 has 144 divisors (see below), whose sum is σ = 108210053952. Its totient is φ = 7900216320.

The previous prime is 32644614383. The next prime is 32644614433. The reversal of 32644614420 is 2441644623.

32644614420 is a `hidden beast` number, since 3 + 2 + 644 + 6 + 1 + 4 + 4 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 1160239 + ... + 1188041.

It is an arithmetic number, because the mean of its divisors is an integer number (751458708).

Almost surely, 2^32644614420 is an apocalyptic number.

32644614420 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 32644614420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54105026976).

32644614420 is an abundant number, since it is smaller than the sum of its proper divisors (75565439532).

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

32644614420 is a wasteful number, since it uses less digits than its factorization.

32644614420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28422 (or 28417 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

The spelling of 32644614420 in words is "thirty-two billion, six hundred forty-four million, six hundred fourteen thousand, four hundred twenty".