23705804381 has 16 divisors (see below), whose sum is σ = 28284248064. Its totient is φ = 19426209264.

The previous prime is 23705804371. The next prime is 23705804389. The reversal of 23705804381 is 18340850732.

It is a de Polignac number, because none of the positive numbers 2^k-23705804381 is a prime.

It is a super-2 number, since 2×23705804381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23705804389) 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, 300020 + ... + 370706.

It is an arithmetic number, because the mean of its divisors is an integer number (1767765504).

Almost surely, 2^23705804381 is an apocalyptic number.

It is an amenable number.

23705804381 is a deficient number, since it is larger than the sum of its proper divisors (4578443683).

23705804381 is a wasteful number, since it uses less digits than its factorization.

23705804381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72800.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 23705804381 in words is "twenty-three billion, seven hundred five million, eight hundred four thousand, three hundred eighty-one".