23639782354434 has 96 divisors (see below), whose sum is σ = 54464368196160. Its totient is φ = 7389210096000.

The previous prime is 23639782354403. The next prime is 23639782354451. The reversal of 23639782354434 is 43445328793632.

23639782354434 is a `hidden beast` number, since 2 + 3 + 6 + 3 + 9 + 7 + 82 + 3 + 544 + 3 + 4 = 666.

It is a super-2 number, since 2×23639782354434² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125535169 + ... + 125723339.

It is an arithmetic number, because the mean of its divisors is an integer number (567337168710).

Almost surely, 2^{23639782354434} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23639782354434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27232184098080).

23639782354434 is an abundant number, since it is smaller than the sum of its proper divisors (30824585841726).

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

23639782354434 is a wasteful number, since it uses less digits than its factorization.

23639782354434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191936 (or 191933 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 63.

The spelling of 23639782354434 in words is "twenty-three trillion, six hundred thirty-nine billion, seven hundred eighty-two million, three hundred fifty-four thousand, four hundred thirty-four".