32638405505 has 8 divisors (see below), whose sum is σ = 39167212392. Its totient is φ = 26109973888.

The previous prime is 32638405493. The next prime is 32638405543. The reversal of 32638405505 is 50550483623.

It can be written as a sum of positive squares in 4 ways, for example, as 14551114384 + 18087291121 = 120628^2 + 134489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32638405505 - 2⁶ = 32638405441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159917 + ... + 301413.

It is an arithmetic number, because the mean of its divisors is an integer number (4895901549).

Almost surely, 2^32638405505 is an apocalyptic number.

It is an amenable number.

32638405505 is a deficient number, since it is larger than the sum of its proper divisors (6528806887).

32638405505 is a wasteful number, since it uses less digits than its factorization.

32638405505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187635.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 32638405505 in words is "thirty-two billion, six hundred thirty-eight million, four hundred five thousand, five hundred five".