101986111904 has 24 divisors (see below), whose sum is σ = 205682359428. Its totient is φ = 49749322240.

The previous prime is 101986111883. The next prime is 101986111907. The reversal of 101986111904 is 409111689101.

It can be written as a sum of positive squares in 2 ways, for example, as 72656124304 + 29329987600 = 269548^2 + 171260^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (101986111907) 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 3 ways as a sum of consecutive naturals, for example, 38865347 + ... + 38867970.

Almost surely, 2^101986111904 is an apocalyptic number.

It is an amenable number.

101986111904 is an abundant number, since it is smaller than the sum of its proper divisors (103696247524).

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

101986111904 is an equidigital number, since it uses as much as digits as its factorization.

101986111904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77733368 (or 77733360 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 41.

The spelling of 101986111904 in words is "one hundred one billion, nine hundred eighty-six million, one hundred eleven thousand, nine hundred four".