21542874275741 has 64 divisors (see below), whose sum is σ = 28227255372288. Its totient is φ = 15954725634048.

The previous prime is 21542874275731. The next prime is 21542874275749. The reversal of 21542874275741 is 14757247824512.

It is a cyclic number.

It is not a de Polignac number, because 21542874275741 - 2²² = 21542870081437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21542874275749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1410143195 + ... + 1410158471.

It is an arithmetic number, because the mean of its divisors is an integer number (441050865192).

Almost surely, 2^{21542874275741} is an apocalyptic number.

It is an amenable number.

21542874275741 is a deficient number, since it is larger than the sum of its proper divisors (6684381096547).

21542874275741 is a wasteful number, since it uses less digits than its factorization.

21542874275741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20230.

The product of its digits is 35123200, while the sum is 59.

The spelling of 21542874275741 in words is "twenty-one trillion, five hundred forty-two billion, eight hundred seventy-four million, two hundred seventy-five thousand, seven hundred forty-one".