32011620640 has 48 divisors (see below), whose sum is σ = 75655513080. Its totient is φ = 12799897600.

The previous prime is 32011620629. The next prime is 32011620647. The reversal of 32011620640 is 4602611023.

It can be written as a sum of positive squares in 4 ways, for example, as 16188999696 + 15822620944 = 127236^2 + 125788^2 .

It is not an unprimeable number, because it can be changed into a prime (32011620647) 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, 412446 + ... + 483874.

Almost surely, 2^32011620640 is an apocalyptic number.

It is an amenable number.

32011620640 is an abundant number, since it is smaller than the sum of its proper divisors (43643892440).

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

32011620640 is a wasteful number, since it uses less digits than its factorization.

32011620640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74245 (or 74237 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 32011620640 in words is "thirty-two billion, eleven million, six hundred twenty thousand, six hundred forty".