21541238514 has 24 divisors (see below), whose sum is σ = 47125820352. Its totient is φ = 7110699480.

The previous prime is 21541238503. The next prime is 21541238519. The reversal of 21541238514 is 41583214512.

21541238514 is a `hidden beast` number, since 2 + 1 + 541 + 23 + 85 + 14 = 666.

21541238514 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (21541238519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5807542 + ... + 5811249.

It is an arithmetic number, because the mean of its divisors is an integer number (1963575848).

Almost surely, 2^21541238514 is an apocalyptic number.

21541238514 is an abundant number, since it is smaller than the sum of its proper divisors (25584581838).

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

21541238514 is a wasteful number, since it uses less digits than its factorization.

21541238514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11618902 (or 11618899 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The spelling of 21541238514 in words is "twenty-one billion, five hundred forty-one million, two hundred thirty-eight thousand, five hundred fourteen".