32010143440 has 120 divisors (see below), whose sum is σ = 82432161504. Its totient is φ = 11550739200.

The previous prime is 32010143423. The next prime is 32010143447. The reversal of 32010143440 is 4434101023.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32010143447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255459 + ... + 1280701.

Almost surely, 2^32010143440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32010143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41216080752).

32010143440 is an abundant number, since it is smaller than the sum of its proper divisors (50422018064).

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

32010143440 is a wasteful number, since it uses less digits than its factorization.

32010143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25409 (or 25392 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 32010143440 its reverse (4434101023), we get a palindrome (36444244463).

The spelling of 32010143440 in words is "thirty-two billion, ten million, one hundred forty-three thousand, four hundred forty".