2543421051020 has 24 divisors (see below), whose sum is σ = 5376556294368. Its totient is φ = 1010630880000.

The previous prime is 2543421051001. The next prime is 2543421051049. The reversal of 2543421051020 is 201501243452.

It is a super-3 number, since 3×2543421051020³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421093181 + ... + 421099220.

It is an arithmetic number, because the mean of its divisors is an integer number (224023178932).

Almost surely, 2^{2543421051020} is an apocalyptic number.

2543421051020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543421051020 is an abundant number, since it is smaller than the sum of its proper divisors (2833135243348).

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

2543421051020 is a wasteful number, since it uses less digits than its factorization.

2543421051020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842192561 (or 842192559 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 2543421051020 its reverse (201501243452), we get a palindrome (2744922294472).

The spelling of 2543421051020 in words is "two trillion, five hundred forty-three billion, four hundred twenty-one million, fifty-one thousand, twenty".