421524354613 has 2 divisors, whose sum is σ = 421524354614. Its totient is φ = 421524354612.

The previous prime is 421524354547. The next prime is 421524354653. The reversal of 421524354613 is 316453425124.

It is an a-pointer prime, because the next prime (421524354653) can be obtained adding 421524354613 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414275024164 + 7249330449 = 643642^2 + 85143^2 .

It is a cyclic number.

It is not a de Polignac number, because 421524354613 - 2¹⁷ = 421524223541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421524354653) 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 as a sum of consecutive naturals, namely, 210762177306 + 210762177307.

It is an arithmetic number, because the mean of its divisors is an integer number (210762177307).

Almost surely, 2^421524354613 is an apocalyptic number.

It is an amenable number.

421524354613 is a deficient number, since it is larger than the sum of its proper divisors (1).

421524354613 is an equidigital number, since it uses as much as digits as its factorization.

421524354613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 40.

Adding to 421524354613 its reverse (316453425124), we get a palindrome (737977779737).

The spelling of 421524354613 in words is "four hundred twenty-one billion, five hundred twenty-four million, three hundred fifty-four thousand, six hundred thirteen".