105487955891 has 2 divisors, whose sum is σ = 105487955892. Its totient is φ = 105487955890.

The previous prime is 105487955887. The next prime is 105487955921. The reversal of 105487955891 is 198559784501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105487955891 - 2² = 105487955887 is a prime.

It is a super-2 number, since 2×105487955891² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105487955861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52743977945 + 52743977946.

It is an arithmetic number, because the mean of its divisors is an integer number (52743977946).

Almost surely, 2^105487955891 is an apocalyptic number.

105487955891 is a deficient number, since it is larger than the sum of its proper divisors (1).

105487955891 is an equidigital number, since it uses as much as digits as its factorization.

105487955891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144000, while the sum is 62.

The spelling of 105487955891 in words is "one hundred five billion, four hundred eighty-seven million, nine hundred fifty-five thousand, eight hundred ninety-one".