23810861840 has 40 divisors (see below), whose sum is σ = 55451569920. Its totient is φ = 9508634496.

The previous prime is 23810861801. The next prime is 23810861873. The reversal of 23810861840 is 4816801832.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196610 + ... + 293729.

It is an arithmetic number, because the mean of its divisors is an integer number (1386289248).

Almost surely, 2^23810861840 is an apocalyptic number.

23810861840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23810861840 is an abundant number, since it is smaller than the sum of its proper divisors (31640708080).

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

23810861840 is a wasteful number, since it uses less digits than its factorization.

23810861840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490959 (or 490953 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 23810861840 in words is "twenty-three billion, eight hundred ten million, eight hundred sixty-one thousand, eight hundred forty".