23201234673534 has 72 divisors (see below), whose sum is σ = 51675734663280. Its totient is φ = 7523116520832.

The previous prime is 23201234673523. The next prime is 23201234673557. The reversal of 23201234673534 is 43537643210232.

23201234673534 is a `hidden beast` number, since 2 + 3 + 2 + 0 + 1 + 2 + 3 + 46 + 73 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23201234673534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 118010887 + ... + 118207325.

It is an arithmetic number, because the mean of its divisors is an integer number (717718536990).

Almost surely, 2^{23201234673534} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23201234673534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25837867331640).

23201234673534 is an abundant number, since it is smaller than the sum of its proper divisors (28474499989746).

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

23201234673534 is a wasteful number, since it uses less digits than its factorization.

23201234673534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201314 (or 201274 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 45.

Adding to 23201234673534 its reverse (43537643210232), we get a palindrome (66738877883766).

The spelling of 23201234673534 in words is "twenty-three trillion, two hundred one billion, two hundred thirty-four million, six hundred seventy-three thousand, five hundred thirty-four".