2543536140 has 96 divisors (see below), whose sum is σ = 7407482880. Its totient is φ = 651545856.

The previous prime is 2543536123. The next prime is 2543536159. The reversal of 2543536140 is 416353452.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168129 + ... + 182631.

It is an arithmetic number, because the mean of its divisors is an integer number (77161280).

Almost surely, 2^2543536140 is an apocalyptic number.

2543536140 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 2543536140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3703741440).

2543536140 is an abundant number, since it is smaller than the sum of its proper divisors (4863946740).

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

2543536140 is a wasteful number, since it uses less digits than its factorization.

2543536140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14631 (or 14629 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 2543536140 is about 50433.4823306898. The cubic root of 2543536140 is about 1365.0418642985.

Adding to 2543536140 its reverse (416353452), we get a palindrome (2959889592).

The spelling of 2543536140 in words is "two billion, five hundred forty-three million, five hundred thirty-six thousand, one hundred forty".