110871861381 has 12 divisors (see below), whose sum is σ = 164054299500. Its totient is φ = 72111779520.

The previous prime is 110871861371. The next prime is 110871861403. The reversal of 110871861381 is 183168178011.

It is a happy number.

110871861381 is a `hidden beast` number, since 1 + 10 + 8 + 7 + 18 + 613 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7145997156 + 103725864225 = 84534^2 + 322065^2 .

It is not a de Polignac number, because 110871861381 - 2¹¹ = 110871859333 is a prime.

It is a super-2 number, since 2×110871861381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110871861361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150232506 + ... + 150233243.

It is an arithmetic number, because the mean of its divisors is an integer number (13671191625).

Almost surely, 2^110871861381 is an apocalyptic number.

It is an amenable number.

110871861381 is a deficient number, since it is larger than the sum of its proper divisors (53182438119).

110871861381 is a wasteful number, since it uses less digits than its factorization.

110871861381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300465796 (or 300465793 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The spelling of 110871861381 in words is "one hundred ten billion, eight hundred seventy-one million, eight hundred sixty-one thousand, three hundred eighty-one".