104681591920 has 20 divisors (see below), whose sum is σ = 243384701400. Its totient is φ = 41872636736.

The previous prime is 104681591887. The next prime is 104681591921. The reversal of 104681591920 is 29195186401.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104681591921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654259870 + ... + 654260029.

It is an arithmetic number, because the mean of its divisors is an integer number (12169235070).

Almost surely, 2^104681591920 is an apocalyptic number.

104681591920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104681591920 is an abundant number, since it is smaller than the sum of its proper divisors (138703109480).

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

104681591920 is a wasteful number, since it uses less digits than its factorization.

104681591920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308519912 (or 1308519906 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 104681591920 in words is "one hundred four billion, six hundred eighty-one million, five hundred ninety-one thousand, nine hundred twenty".