32440780746 has 120 divisors (see below), whose sum is σ = 82061747460. Its totient is φ = 9564635520.

The previous prime is 32440780741. The next prime is 32440780781. The reversal of 32440780746 is 64708704423.

It can be written as a sum of positive squares in 2 ways, for example, as 28158518025 + 4282262721 = 167805^2 + 65439^2 .

It is not an unprimeable number, because it can be changed into a prime (32440780741) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 702910 + ... + 747638.

Almost surely, 2^32440780746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32440780746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41030873730).

32440780746 is an abundant number, since it is smaller than the sum of its proper divisors (49620966714).

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

32440780746 is a wasteful number, since it uses less digits than its factorization.

32440780746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44802 (or 44782 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 32440780746 in words is "thirty-two billion, four hundred forty million, seven hundred eighty thousand, seven hundred forty-six".