2543660992 has 56 divisors (see below), whose sum is σ = 5349148560. Its totient is φ = 1197987840.

The previous prime is 2543660969. The next prime is 2543660993. The reversal of 2543660992 is 2990663452.

It is a super-2 number, since 2×2543660992² = 12940422484444848128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543660993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59383 + ... + 92809.

It is an arithmetic number, because the mean of its divisors is an integer number (95520510).

Almost surely, 2^2543660992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543660992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674574280).

2543660992 is an abundant number, since it is smaller than the sum of its proper divisors (2805487568).

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

2543660992 is a wasteful number, since it uses less digits than its factorization.

2543660992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33509 (or 33499 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 2543660992 is about 50434.7201043091. The cubic root of 2543660992 is about 1365.0641987454.

The spelling of 2543660992 in words is "two billion, five hundred forty-three million, six hundred sixty thousand, nine hundred ninety-two".