20424010357 has 2 divisors, whose sum is σ = 20424010358. Its totient is φ = 20424010356.

The previous prime is 20424010337. The next prime is 20424010363. The reversal of 20424010357 is 75301042402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12998052081 + 7425958276 = 114009^2 + 86174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20424010357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20424010337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212005178 + 10212005179.

It is an arithmetic number, because the mean of its divisors is an integer number (10212005179).

Almost surely, 2^20424010357 is an apocalyptic number.

It is an amenable number.

20424010357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20424010357 is an equidigital number, since it uses as much as digits as its factorization.

20424010357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 20424010357 its reverse (75301042402), we get a palindrome (95725052759).

The spelling of 20424010357 in words is "twenty billion, four hundred twenty-four million, ten thousand, three hundred fifty-seven".