423626261564 has 18 divisors (see below), whose sum is σ = 814867871832. Its totient is φ = 192557391400.

The previous prime is 423626261549. The next prime is 423626261579. The reversal of 423626261564 is 465162626324.

It is an interprime number because it is at equal distance from previous prime (423626261549) and next prime (423626261579).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437629952 + ... + 437630919.

It is an arithmetic number, because the mean of its divisors is an integer number (45270437324).

Almost surely, 2^423626261564 is an apocalyptic number.

423626261564 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

423626261564 is a deficient number, since it is larger than the sum of its proper divisors (391241610268).

423626261564 is a wasteful number, since it uses less digits than its factorization.

423626261564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875260897 (or 875260884 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 47.

Adding to 423626261564 its reverse (465162626324), we get a palindrome (888788887888).

The spelling of 423626261564 in words is "four hundred twenty-three billion, six hundred twenty-six million, two hundred sixty-one thousand, five hundred sixty-four".