621132432433 has 2 divisors, whose sum is σ = 621132432434. Its totient is φ = 621132432432.

The previous prime is 621132432409. The next prime is 621132432439. The reversal of 621132432433 is 334234231126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 607514242624 + 13618189809 = 779432^2 + 116697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-621132432433 is a prime.

It is not a weakly prime, because it can be changed into another prime (621132432439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310566216216 + 310566216217.

It is an arithmetic number, because the mean of its divisors is an integer number (310566216217).

Almost surely, 2^621132432433 is an apocalyptic number.

It is an amenable number.

621132432433 is a deficient number, since it is larger than the sum of its proper divisors (1).

621132432433 is an equidigital number, since it uses as much as digits as its factorization.

621132432433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 34.

Adding to 621132432433 its reverse (334234231126), we get a palindrome (955366663559).

The spelling of 621132432433 in words is "six hundred twenty-one billion, one hundred thirty-two million, four hundred thirty-two thousand, four hundred thirty-three".