20201343212040 has 32 divisors (see below), whose sum is σ = 60604029636480. Its totient is φ = 5387024856512.

The previous prime is 20201343212009. The next prime is 20201343212051. The reversal of 20201343212040 is 4021234310202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20201343212040.

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, 84172263264 + ... + 84172263503.

It is an arithmetic number, because the mean of its divisors is an integer number (1893875926140).

Almost surely, 2^{20201343212040} is an apocalyptic number.

20201343212040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201343212040 is an abundant number, since it is smaller than the sum of its proper divisors (40402686424440).

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

20201343212040 is a wasteful number, since it uses less digits than its factorization.

20201343212040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168344526781 (or 168344526777 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20201343212040 its reverse (4021234310202), we get a palindrome (24222577522242).

The spelling of 20201343212040 in words is "twenty trillion, two hundred one billion, three hundred forty-three million, two hundred twelve thousand, forty".