999108534870 has 240 divisors, whose sum is σ = 2840247942048. Its totient is φ = 251968527360.

The previous prime is 999108534863. The next prime is 999108534871. The reversal of 999108534870 is 78435801999.

999108534870 is a `hidden beast` number, since 9 + 9 + 9 + 10 + 8 + 534 + 87 + 0 = 666.

It is a super-3 number, since 3×999108534870³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999108534798 and 999108534807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999108534871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 189186630 + ... + 189191910.

Almost surely, 2^999108534870 is an apocalyptic number.

999108534870 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 999108534870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420123971024).

999108534870 is an abundant number, since it is smaller than the sum of its proper divisors (1841139407178).

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

999108534870 is a wasteful number, since it uses less digits than its factorization.

999108534870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985 (or 5957 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 999108534870 in words is "nine hundred ninety-nine billion, one hundred eight million, five hundred thirty-four thousand, eight hundred seventy".