104779999883520 has 864 divisors, whose sum is σ = 395253077611392. Its totient is φ = 25473821442048.

The previous prime is 104779999883519. The next prime is 104779999883551. The reversal of 104779999883520 is 25388999977401.

104779999883520 is a `hidden beast` number, since 1 + 0 + 4 + 7 + 7 + 9 + 9 + 9 + 9 + 8 + 83 + 520 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 104779999883520.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5400186139 + ... + 5400205541.

It is an arithmetic number, because the mean of its divisors is an integer number (457468839828).

Almost surely, 2^{104779999883520} is an apocalyptic number.

104779999883520 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 104779999883520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197626538805696).

104779999883520 is an abundant number, since it is smaller than the sum of its proper divisors (290473077727872).

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

104779999883520 is a wasteful number, since it uses less digits than its factorization.

104779999883520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19887 (or 19870 counting only the distinct ones).

The product of its (nonzero) digits is 2469035520, while the sum is 81.

The spelling of 104779999883520 in words is "one hundred four trillion, seven hundred seventy-nine billion, nine hundred ninety-nine million, eight hundred eighty-three thousand, five hundred twenty".