21624353162141 has 4 divisors (see below), whose sum is σ = 22762477012800. Its totient is φ = 20486229311484.

The previous prime is 21624353162119. The next prime is 21624353162143. The reversal of 21624353162141 is 14126135342612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21624353162141 is a prime.

It is a super-2 number, since 2×21624353162141² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21624353162143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569061925301 + ... + 569061925338.

It is an arithmetic number, because the mean of its divisors is an integer number (5690619253200).

Almost surely, 2^{21624353162141} is an apocalyptic number.

It is an amenable number.

21624353162141 is a deficient number, since it is larger than the sum of its proper divisors (1138123850659).

21624353162141 is a wasteful number, since it uses less digits than its factorization.

21624353162141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138123850658.

The product of its digits is 207360, while the sum is 41.

The spelling of 21624353162141 in words is "twenty-one trillion, six hundred twenty-four billion, three hundred fifty-three million, one hundred sixty-two thousand, one hundred forty-one".