201423434042432 has 112 divisors (see below), whose sum is σ = 465578585752320. Its totient is φ = 84666423908352.

The previous prime is 201423434042419. The next prime is 201423434042449. The reversal of 201423434042432 is 234240434324102.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67613213 + ... + 70529379.

Almost surely, 2^{201423434042432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201423434042432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232789292876160).

201423434042432 is an abundant number, since it is smaller than the sum of its proper divisors (264155151709888).

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

201423434042432 is a wasteful number, since it uses less digits than its factorization.

201423434042432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919148 (or 2919138 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 201423434042432 its reverse (234240434324102), we get a palindrome (435663868366534).

The spelling of 201423434042432 in words is "two hundred one trillion, four hundred twenty-three billion, four hundred thirty-four million, forty-two thousand, four hundred thirty-two".