621632340223 has 2 divisors, whose sum is σ = 621632340224. Its totient is φ = 621632340222.

The previous prime is 621632340163. The next prime is 621632340227. The reversal of 621632340223 is 322043236126.

621632340223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621632340223 - 2⁹ = 621632339711 is a prime.

It is a super-2 number, since 2×621632340223² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621632340227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310816170111 + 310816170112.

It is an arithmetic number, because the mean of its divisors is an integer number (310816170112).

Almost surely, 2^621632340223 is an apocalyptic number.

621632340223 is a deficient number, since it is larger than the sum of its proper divisors (1).

621632340223 is an equidigital number, since it uses as much as digits as its factorization.

621632340223 is an evil number, because the sum of its binary digits is even.

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

Adding to 621632340223 its reverse (322043236126), we get a palindrome (943675576349).

The spelling of 621632340223 in words is "six hundred twenty-one billion, six hundred thirty-two million, three hundred forty thousand, two hundred twenty-three".