32646660440 has 16 divisors (see below), whose sum is σ = 73454986080. Its totient is φ = 13058664160.

The previous prime is 32646660439. The next prime is 32646660443. The reversal of 32646660440 is 4406664623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32646660443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408083216 + ... + 408083295.

It is an arithmetic number, because the mean of its divisors is an integer number (4590936630).

Almost surely, 2^32646660440 is an apocalyptic number.

It is an amenable number.

32646660440 is an abundant number, since it is smaller than the sum of its proper divisors (40808325640).

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

32646660440 is a wasteful number, since it uses less digits than its factorization.

32646660440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816166522 (or 816166518 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 41.

The spelling of 32646660440 in words is "thirty-two billion, six hundred forty-six million, six hundred sixty thousand, four hundred forty".