105249885651 has 8 divisors (see below), whose sum is σ = 155925756560. Its totient is φ = 70166590416.

The previous prime is 105249885649. The next prime is 105249885679. The reversal of 105249885651 is 156588942501.

105249885651 is a `hidden beast` number, since 1 + 0 + 52 + 498 + 8 + 56 + 51 = 666.

It is not a de Polignac number, because 105249885651 - 2¹ = 105249885649 is a prime.

It is a super-2 number, since 2×105249885651² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105249885151) 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 7 ways as a sum of consecutive naturals, for example, 1949071930 + ... + 1949071983.

It is an arithmetic number, because the mean of its divisors is an integer number (19490719570).

Almost surely, 2^105249885651 is an apocalyptic number.

105249885651 is a deficient number, since it is larger than the sum of its proper divisors (50675870909).

105249885651 is an equidigital number, since it uses as much as digits as its factorization.

105249885651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898143922 (or 3898143916 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 105249885651 in words is "one hundred five billion, two hundred forty-nine million, eight hundred eighty-five thousand, six hundred fifty-one".