32640421042 has 32 divisors (see below), whose sum is σ = 49942784304. Its totient is φ = 15996825600.

The previous prime is 32640421031. The next prime is 32640421063. The reversal of 32640421042 is 24012404623.

It can be written as a sum of positive squares in 8 ways, for example, as 20894413401 + 11746007641 = 144549^2 + 108379^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 32640421042.

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 15 ways as a sum of consecutive naturals, for example, 9429192 + ... + 9432652.

Almost surely, 2^32640421042 is an apocalyptic number.

32640421042 is a deficient number, since it is larger than the sum of its proper divisors (17302363262).

32640421042 is a wasteful number, since it uses less digits than its factorization.

32640421042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 32640421042 its reverse (24012404623), we get a palindrome (56652825665).

The spelling of 32640421042 in words is "thirty-two billion, six hundred forty million, four hundred twenty-one thousand, forty-two".