423784431657487 has 8 divisors (see below), whose sum is σ = 424493853004800. Its totient is φ = 423075016760760.

The previous prime is 423784431657451. The next prime is 423784431657547. The reversal of 423784431657487 is 784756134487324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423784431657487 - 2²⁷ = 423784297439759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423784431657427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140339062 + ... + 143326972.

It is an arithmetic number, because the mean of its divisors is an integer number (53061731625600).

Almost surely, 2^{423784431657487} is an apocalyptic number.

423784431657487 is a deficient number, since it is larger than the sum of its proper divisors (709421347313).

423784431657487 is a wasteful number, since it uses less digits than its factorization.

423784431657487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225293.

The product of its digits is 3034644480, while the sum is 73.

The spelling of 423784431657487 in words is "four hundred twenty-three trillion, seven hundred eighty-four billion, four hundred thirty-one million, six hundred fifty-seven thousand, four hundred eighty-seven".