423997695864 has 24 divisors (see below), whose sum is σ = 1148327093160. Its totient is φ = 141332565264.

The previous prime is 423997695859. The next prime is 423997695871. The reversal of 423997695864 is 468596799324.

423997695864 is a `hidden beast` number, since 4 + 2 + 39 + 9 + 7 + 6 + 9 + 586 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 5888856887 = 423997695864 / (4 + 2 + 3 + 9 + 9 + 7 + 6 + 9 + 5 + 8 + 6 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 423997695792 and 423997695801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2944428372 + ... + 2944428515.

It is an arithmetic number, because the mean of its divisors is an integer number (47846962215).

Almost surely, 2^423997695864 is an apocalyptic number.

It is an amenable number.

423997695864 is an abundant number, since it is smaller than the sum of its proper divisors (724329397296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423997695864 is a wasteful number, since it uses less digits than its factorization.

423997695864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888856899 (or 5888856892 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 72.

The spelling of 423997695864 in words is "four hundred twenty-three billion, nine hundred ninety-seven million, six hundred ninety-five thousand, eight hundred sixty-four".