32720766288 has 40 divisors (see below), whose sum is σ = 96604168128. Its totient is φ = 9348790272.

The previous prime is 32720766277. The next prime is 32720766289. The reversal of 32720766288 is 88266702723.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 32720766288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32720766289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48691281 + ... + 48691952.

Almost surely, 2^32720766288 is an apocalyptic number.

It is an amenable number.

32720766288 is an abundant number, since it is smaller than the sum of its proper divisors (63883401840).

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

32720766288 is a wasteful number, since it uses less digits than its factorization.

32720766288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97383251 (or 97383245 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 32720766288 in words is "thirty-two billion, seven hundred twenty million, seven hundred sixty-six thousand, two hundred eighty-eight".