23905581040 has 40 divisors (see below), whose sum is σ = 60633248688. Its totient is φ = 8692938240.

The previous prime is 23905580953. The next prime is 23905581053. The reversal of 23905581040 is 4018550932.

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

It is a congruent number.

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, 13581837 + ... + 13583596.

Almost surely, 2^23905581040 is an apocalyptic number.

23905581040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23905581040 is an abundant number, since it is smaller than the sum of its proper divisors (36727667648).

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

23905581040 is a wasteful number, since it uses less digits than its factorization.

23905581040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27165457 (or 27165451 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 23905581040 in words is "twenty-three billion, nine hundred five million, five hundred eighty-one thousand, forty".