23478851808 has 120 divisors (see below), whose sum is σ = 70081776072. Its totient is φ = 7709416704.

The previous prime is 23478851807. The next prime is 23478851933. The reversal of 23478851808 is 80815887432.

23478851808 is a `hidden beast` number, since 2 + 3 + 47 + 88 + 518 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23478851807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 106066 + ... + 241262.

Almost surely, 2^23478851808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23478851808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35040888036).

23478851808 is an abundant number, since it is smaller than the sum of its proper divisors (46602924264).

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

23478851808 is a wasteful number, since it uses less digits than its factorization.

23478851808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135286 (or 135269 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 23478851808 in words is "twenty-three billion, four hundred seventy-eight million, eight hundred fifty-one thousand, eight hundred eight".