2543454020240 has 160 divisors (see below), whose sum is σ = 6836353945344. Its totient is φ = 862008145920.

The previous prime is 2543454020231. The next prime is 2543454020243. The reversal of 2543454020240 is 420204543452.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2543454020240.

It is not an unprimeable number, because it can be changed into a prime (2543454020243) 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, 27577082 + ... + 27669158.

Almost surely, 2^{2543454020240} is an apocalyptic number.

2543454020240 is a gapful number since it is divisible by the number (20) 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 2543454020240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3418176972672).

2543454020240 is an abundant number, since it is smaller than the sum of its proper divisors (4292899925104).

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

2543454020240 is a wasteful number, since it uses less digits than its factorization.

2543454020240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92665 (or 92659 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 35.

Adding to 2543454020240 its reverse (420204543452), we get a palindrome (2963658563692).

The spelling of 2543454020240 in words is "two trillion, five hundred forty-three billion, four hundred fifty-four million, twenty thousand, two hundred forty".