105261203139 has 16 divisors (see below), whose sum is σ = 140576377344. Its totient is φ = 70060140000.

The previous prime is 105261203119. The next prime is 105261203191. The reversal of 105261203139 is 931302162501.

It is not a de Polignac number, because 105261203139 - 2⁵ = 105261203107 is a prime.

It is a super-2 number, since 2×105261203139² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105261203119) 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 15 ways as a sum of consecutive naturals, for example, 14354704 + ... + 14362034.

It is an arithmetic number, because the mean of its divisors is an integer number (8786023584).

Almost surely, 2^105261203139 is an apocalyptic number.

105261203139 is a deficient number, since it is larger than the sum of its proper divisors (35315174205).

105261203139 is an equidigital number, since it uses as much as digits as its factorization.

105261203139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458.

The product of its (nonzero) digits is 9720, while the sum is 33.

The spelling of 105261203139 in words is "one hundred five billion, two hundred sixty-one million, two hundred three thousand, one hundred thirty-nine".