21824714157 has 8 divisors (see below), whose sum is σ = 29100504576. Its totient is φ = 14549366592.

The previous prime is 21824714117. The next prime is 21824714159. The reversal of 21824714157 is 75141742812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21824714157 - 2²⁰ = 21823665581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21824714159) 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 7 ways as a sum of consecutive naturals, for example, 29733 + ... + 211029.

It is an arithmetic number, because the mean of its divisors is an integer number (3637563072).

Almost surely, 2^21824714157 is an apocalyptic number.

It is an amenable number.

21824714157 is a deficient number, since it is larger than the sum of its proper divisors (7275790419).

21824714157 is a wasteful number, since it uses less digits than its factorization.

21824714157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221427.

The product of its digits is 125440, while the sum is 42.

The spelling of 21824714157 in words is "twenty-one billion, eight hundred twenty-four million, seven hundred fourteen thousand, one hundred fifty-seven".