64204226623 has 2 divisors, whose sum is σ = 64204226624. Its totient is φ = 64204226622.

The previous prime is 64204226549. The next prime is 64204226657. The reversal of 64204226623 is 32662240246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64204226623 - 2²¹ = 64202129471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64204206623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32102113311 + 32102113312.

It is an arithmetic number, because the mean of its divisors is an integer number (32102113312).

Almost surely, 2^64204226623 is an apocalyptic number.

64204226623 is a deficient number, since it is larger than the sum of its proper divisors (1).

64204226623 is an equidigital number, since it uses as much as digits as its factorization.

64204226623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 64204226623 its reverse (32662240246), we get a palindrome (96866466869).

The spelling of 64204226623 in words is "sixty-four billion, two hundred four million, two hundred twenty-six thousand, six hundred twenty-three".