423640355366 has 4 divisors (see below), whose sum is σ = 635460533052. Its totient is φ = 211820177682.

The previous prime is 423640355357. The next prime is 423640355387. The reversal of 423640355366 is 663553046324.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 423640355366.

It is a congruent number.

It is an unprimeable number.

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, 105910088840 + ... + 105910088843.

It is an arithmetic number, because the mean of its divisors is an integer number (158865133263).

Almost surely, 2^423640355366 is an apocalyptic number.

423640355366 is a deficient number, since it is larger than the sum of its proper divisors (211820177686).

423640355366 is a wasteful number, since it uses less digits than its factorization.

423640355366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211820177685.

The product of its (nonzero) digits is 4665600, while the sum is 47.

The spelling of 423640355366 in words is "four hundred twenty-three billion, six hundred forty million, three hundred fifty-five thousand, three hundred sixty-six".