2544973730442 has 96 divisors (see below), whose sum is σ = 6492741143616. Its totient is φ = 710273491200.

The previous prime is 2544973730441. The next prime is 2544973730473. The reversal of 2544973730442 is 2440373794452.

2544973730442 is a `hidden beast` number, since 2 + 5 + 44 + 97 + 3 + 73 + 0 + 442 = 666.

It is not an unprimeable number, because it can be changed into a prime (2544973730441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24342 + ... + 2256222.

It is an arithmetic number, because the mean of its divisors is an integer number (67632720246).

Almost surely, 2^{2544973730442} is an apocalyptic number.

2544973730442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2544973730442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3246370571808).

2544973730442 is an abundant number, since it is smaller than the sum of its proper divisors (3947767413174).

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

2544973730442 is a wasteful number, since it uses less digits than its factorization.

2544973730442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232356 (or 2232353 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 54.

The spelling of 2544973730442 in words is "two trillion, five hundred forty-four billion, nine hundred seventy-three million, seven hundred thirty thousand, four hundred forty-two".