423671056578 has 128 divisors (see below), whose sum is σ = 1235586816000. Its totient is φ = 104252598720.

The previous prime is 423671056573. The next prime is 423671056619. The reversal of 423671056578 is 875650176324.

423671056578 is a `hidden beast` number, since 4 + 2 + 3 + 6 + 7 + 1 + 0 + 565 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423671056573) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2602393 + ... + 2760396.

It is an arithmetic number, because the mean of its divisors is an integer number (9653022000).

Almost surely, 2^423671056578 is an apocalyptic number.

423671056578 is an abundant number, since it is smaller than the sum of its proper divisors (811915759422).

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

423671056578 is a wasteful number, since it uses less digits than its factorization.

423671056578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362837 (or 5362831 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 423671056578 in words is "four hundred twenty-three billion, six hundred seventy-one million, fifty-six thousand, five hundred seventy-eight".