423783128464 has 10 divisors (see below), whose sum is σ = 821079811430. Its totient is φ = 211891564224.

The previous prime is 423783128443. The next prime is 423783128467. The reversal of 423783128464 is 464821387324.

It can be written as a sum of positive squares in only one way, i.e., 382245427600 + 41537700864 = 618260^2 + 203808^2 .

It is not an unprimeable number, because it can be changed into a prime (423783128467) by changing a digit.

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, 13243222749 + ... + 13243222780.

It is an arithmetic number, because the mean of its divisors is an integer number (82107981143).

Almost surely, 2^423783128464 is an apocalyptic number.

It is an amenable number.

423783128464 is a deficient number, since it is larger than the sum of its proper divisors (397296682966).

423783128464 is a wasteful number, since it uses less digits than its factorization.

423783128464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26486445537 (or 26486445531 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 52.

The spelling of 423783128464 in words is "four hundred twenty-three billion, seven hundred eighty-three million, one hundred twenty-eight thousand, four hundred sixty-four".