423435617999 has 16 divisors (see below), whose sum is σ = 437951229408. Its totient is φ = 409164193152.

The previous prime is 423435617989. The next prime is 423435618007. The reversal of 423435617999 is 999716534324.

It is a de Polignac number, because none of the positive numbers 2^k-423435617999 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 (423435617939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25690349 + ... + 25706825.

It is an arithmetic number, because the mean of its divisors is an integer number (27371951838).

Almost surely, 2^423435617999 is an apocalyptic number.

423435617999 is a deficient number, since it is larger than the sum of its proper divisors (14515611409).

423435617999 is a wasteful number, since it uses less digits than its factorization.

423435617999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23834.

The product of its digits is 44089920, while the sum is 62.

The spelling of 423435617999 in words is "four hundred twenty-three billion, four hundred thirty-five million, six hundred seventeen thousand, nine hundred ninety-nine".