104123063520 has 720 divisors, whose sum is σ = 431542420848. Its totient is φ = 23572684800.

The previous prime is 104123063507. The next prime is 104123063573. The reversal of 104123063520 is 25360321401.

104123063520 is a `hidden beast` number, since 1 + 0 + 4 + 1 + 2 + 3 + 0 + 635 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×104123063520² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 71758795 + ... + 71760245.

Almost surely, 2^104123063520 is an apocalyptic number.

104123063520 is a gapful number since it is divisible by the number (10) 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 104123063520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215771210424).

104123063520 is an abundant number, since it is smaller than the sum of its proper divisors (327419357328).

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

104123063520 is a wasteful number, since it uses less digits than its factorization.

104123063520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 104123063520 its reverse (25360321401), we get a palindrome (129483384921).

The spelling of 104123063520 in words is "one hundred four billion, one hundred twenty-three million, sixty-three thousand, five hundred twenty".