32666136540 has 96 divisors (see below), whose sum is σ = 94474598400. Its totient is φ = 8424710400.

The previous prime is 32666136533. The next prime is 32666136541. The reversal of 32666136540 is 4563166623.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 32666136492 and 32666136501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32666136541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3620635 + ... + 3629645.

It is an arithmetic number, because the mean of its divisors is an integer number (984110400).

Almost surely, 2^32666136540 is an apocalyptic number.

32666136540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32666136540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47237299200).

32666136540 is an abundant number, since it is smaller than the sum of its proper divisors (61808461860).

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

32666136540 is a wasteful number, since it uses less digits than its factorization.

32666136540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003 (or 11001 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 32666136540 in words is "thirty-two billion, six hundred sixty-six million, one hundred thirty-six thousand, five hundred forty".