2543538433260 has 384 divisors, whose sum is σ = 8059927680000. Its totient is φ = 593919406080.

The previous prime is 2543538433253. The next prime is 2543538433279. The reversal of 2543538433260 is 623348353452.

It is a happy number.

It is a super-2 number, since 2×2543538433260² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1269863419 + ... + 1269865421.

It is an arithmetic number, because the mean of its divisors is an integer number (20989395000).

Almost surely, 2^{2543538433260} is an apocalyptic number.

2543538433260 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 2543538433260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4029963840000).

2543538433260 is an abundant number, since it is smaller than the sum of its proper divisors (5516389246740).

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

2543538433260 is a wasteful number, since it uses less digits than its factorization.

2543538433260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 48.

The spelling of 2543538433260 in words is "two trillion, five hundred forty-three billion, five hundred thirty-eight million, four hundred thirty-three thousand, two hundred sixty".