220140143440 has 40 divisors (see below), whose sum is σ = 584943811200. Its totient is φ = 75476620416.

The previous prime is 220140143411. The next prime is 220140143453. The reversal of 220140143440 is 44341041022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196553140 + ... + 196554259.

It is an arithmetic number, because the mean of its divisors is an integer number (14623595280).

Almost surely, 2^220140143440 is an apocalyptic number.

220140143440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220140143440 is an abundant number, since it is smaller than the sum of its proper divisors (364803667760).

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

220140143440 is a wasteful number, since it uses less digits than its factorization.

220140143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393107419 (or 393107413 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 220140143440 its reverse (44341041022), we get a palindrome (264481184462).

The spelling of 220140143440 in words is "two hundred twenty billion, one hundred forty million, one hundred forty-three thousand, four hundred forty".