105612791428 has 12 divisors (see below), whose sum is σ = 186518003980. Its totient is φ = 52321933152.

The previous prime is 105612791357. The next prime is 105612791429. The reversal of 105612791428 is 824197216501.

It can be written as a sum of positive squares in 2 ways, for example, as 89148822084 + 16463969344 = 298578^2 + 128312^2 .

It is a super-2 number, since 2×105612791428² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105612791429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121115151 + ... + 121116022.

Almost surely, 2^105612791428 is an apocalyptic number.

It is an amenable number.

105612791428 is a deficient number, since it is larger than the sum of its proper divisors (80905212552).

105612791428 is a wasteful number, since it uses less digits than its factorization.

105612791428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242231286 (or 242231284 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 105612791428 in words is "one hundred five billion, six hundred twelve million, seven hundred ninety-one thousand, four hundred twenty-eight".