32515312240 has 40 divisors (see below), whose sum is σ = 78036755328. Its totient is φ = 12586571520.

The previous prime is 32515312223. The next prime is 32515312241. The reversal of 32515312240 is 4221351523.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 32515312199 and 32515312208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32515312241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6553027 + ... + 6557986.

Almost surely, 2^32515312240 is an apocalyptic number.

It is an amenable number.

32515312240 is an abundant number, since it is smaller than the sum of its proper divisors (45521443088).

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

32515312240 is a wasteful number, since it uses less digits than its factorization.

32515312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111057 (or 13111051 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 32515312240 its reverse (4221351523), we get a palindrome (36736663763).

The spelling of 32515312240 in words is "thirty-two billion, five hundred fifteen million, three hundred twelve thousand, two hundred forty".