423836402991 has 8 divisors (see below), whose sum is σ = 584601935280. Its totient is φ = 272814236352.

The previous prime is 423836402981. The next prime is 423836402999. The reversal of 423836402991 is 199204638324.

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

It is not a de Polignac number, because 423836402991 - 2¹³ = 423836394799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423836402999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435841310 + ... + 2435841483.

It is an arithmetic number, because the mean of its divisors is an integer number (73075241910).

Almost surely, 2^423836402991 is an apocalyptic number.

423836402991 is a deficient number, since it is larger than the sum of its proper divisors (160765532289).

423836402991 is a wasteful number, since it uses less digits than its factorization.

423836402991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871682825.

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 423836402991 in words is "four hundred twenty-three billion, eight hundred thirty-six million, four hundred two thousand, nine hundred ninety-one".