423631342663972 has 12 divisors (see below), whose sum is σ = 759436675263756. Its totient is φ = 206649435445760.

The previous prime is 423631342663961. The next prime is 423631342663973. The reversal of 423631342663972 is 279366243136324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53531699039296 + 370099643624676 = 7316536^2 + 19237974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 423631342663972.

It is not an unprimeable number, because it can be changed into a prime (423631342663973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291558971373 + ... + 1291558971700.

It is an arithmetic number, because the mean of its divisors is an integer number (63286389605313).

Almost surely, 2^{423631342663972} is an apocalyptic number.

It is an amenable number.

423631342663972 is a deficient number, since it is larger than the sum of its proper divisors (335805332599784).

423631342663972 is a wasteful number, since it uses less digits than its factorization.

423631342663972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583117943118 (or 2583117943116 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 61.

The spelling of 423631342663972 in words is "four hundred twenty-three trillion, six hundred thirty-one billion, three hundred forty-two million, six hundred sixty-three thousand, nine hundred seventy-two".