101989545912 has 96 divisors (see below), whose sum is σ = 287309468160. Its totient is φ = 32648616000.

The previous prime is 101989545883. The next prime is 101989545971. The reversal of 101989545912 is 219545989101.

101989545912 is a `hidden beast` number, since 1 + 0 + 1 + 9 + 8 + 9 + 545 + 91 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117987 + ... + 466797.

It is an arithmetic number, because the mean of its divisors is an integer number (2992806960).

Almost surely, 2^101989545912 is an apocalyptic number.

101989545912 is a gapful number since it is divisible by the number (12) 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 101989545912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143654734080).

101989545912 is an abundant number, since it is smaller than the sum of its proper divisors (185319922248).

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

101989545912 is a wasteful number, since it uses less digits than its factorization.

101989545912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348985 (or 348978 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 54.

The spelling of 101989545912 in words is "one hundred one billion, nine hundred eighty-nine million, five hundred forty-five thousand, nine hundred twelve".