32638783520 has 96 divisors (see below), whose sum is σ = 88948637568. Its totient is φ = 11085815808.

The previous prime is 32638783519. The next prime is 32638783543. The reversal of 32638783520 is 2538783623.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16337 + ... + 256016.

It is an arithmetic number, because the mean of its divisors is an integer number (926548308).

Almost surely, 2^32638783520 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 32638783520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44474318784).

32638783520 is an abundant number, since it is smaller than the sum of its proper divisors (56309854048).

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

32638783520 is a wasteful number, since it uses less digits than its factorization.

32638783520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272482 (or 272474 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 32638783520 in words is "thirty-two billion, six hundred thirty-eight million, seven hundred eighty-three thousand, five hundred twenty".