104521778844 has 96 divisors (see below), whose sum is σ = 295221459456. Its totient is φ = 28097064960.

The previous prime is 104521778843. The next prime is 104521778873. The reversal of 104521778844 is 448877125401.

104521778844 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104521778843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4802932 + ... + 4824644.

It is an arithmetic number, because the mean of its divisors is an integer number (3075223536).

Almost surely, 2^104521778844 is an apocalyptic number.

104521778844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104521778844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147610729728).

104521778844 is an abundant number, since it is smaller than the sum of its proper divisors (190699680612).

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

104521778844 is a wasteful number, since it uses less digits than its factorization.

104521778844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25115 (or 25113 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 51.

The spelling of 104521778844 in words is "one hundred four billion, five hundred twenty-one million, seven hundred seventy-eight thousand, eight hundred forty-four".