105111515028 has 48 divisors (see below), whose sum is σ = 264975774336. Its totient is φ = 32237996160.

The previous prime is 105111515027. The next prime is 105111515039. The reversal of 105111515028 is 820515111501.

It is a super-2 number, since 2×105111515028² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105111514986 and 105111515004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105111515027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034751 + ... + 1131782.

It is an arithmetic number, because the mean of its divisors is an integer number (5520328632).

Almost surely, 2^105111515028 is an apocalyptic number.

It is an amenable number.

105111515028 is an abundant number, since it is smaller than the sum of its proper divisors (159864259308).

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

105111515028 is a wasteful number, since it uses less digits than its factorization.

105111515028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166864 (or 2166862 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 30.

Adding to 105111515028 its reverse (820515111501), we get a palindrome (925626626529).

The spelling of 105111515028 in words is "one hundred five billion, one hundred eleven million, five hundred fifteen thousand, twenty-eight".