20424523124641 has 4 divisors (see below), whose sum is σ = 20922682225284. Its totient is φ = 19926364024000.

The previous prime is 20424523124633. The next prime is 20424523124653. The reversal of 20424523124641 is 14642132542402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 548940219025 + 19875582905616 = 740905^2 + 4458204^2 .

It is a cyclic number.

It is not a de Polignac number, because 20424523124641 - 2³ = 20424523124633 is a prime.

It is a super-2 number, since 2×20424523124641² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20424523124594 and 20424523124603.

It is not an unprimeable number, because it can be changed into a prime (20424523124141) 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, 249079550260 + ... + 249079550341.

It is an arithmetic number, because the mean of its divisors is an integer number (5230670556321).

Almost surely, 2^{20424523124641} is an apocalyptic number.

It is an amenable number.

20424523124641 is a deficient number, since it is larger than the sum of its proper divisors (498159100643).

20424523124641 is an equidigital number, since it uses as much as digits as its factorization.

20424523124641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498159100642.

The product of its (nonzero) digits is 368640, while the sum is 40.

The spelling of 20424523124641 in words is "twenty trillion, four hundred twenty-four billion, five hundred twenty-three million, one hundred twenty-four thousand, six hundred forty-one".