104123821605 has 64 divisors (see below), whose sum is σ = 176324069376. Its totient is φ = 52383744000.

The previous prime is 104123821561. The next prime is 104123821609. The reversal of 104123821605 is 506128321401.

It is not a de Polignac number, because 104123821605 - 2¹⁵ = 104123788837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104123821609) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33190597 + ... + 33193733.

It is an arithmetic number, because the mean of its divisors is an integer number (2755063584).

Almost surely, 2^104123821605 is an apocalyptic number.

104123821605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104123821605 is a deficient number, since it is larger than the sum of its proper divisors (72200247771).

104123821605 is a wasteful number, since it uses less digits than its factorization.

104123821605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 104123821605 in words is "one hundred four billion, one hundred twenty-three million, eight hundred twenty-one thousand, six hundred five".