101105504989 has 2 divisors, whose sum is σ = 101105504990. Its totient is φ = 101105504988.

The previous prime is 101105504963. The next prime is 101105505041. The reversal of 101105504989 is 989405501101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83434322500 + 17671182489 = 288850^2 + 132933^2 .

It is a cyclic number.

It is not a de Polignac number, because 101105504989 - 2¹⁷ = 101105373917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101105504089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50552752494 + 50552752495.

It is an arithmetic number, because the mean of its divisors is an integer number (50552752495).

Almost surely, 2^101105504989 is an apocalyptic number.

It is an amenable number.

101105504989 is a deficient number, since it is larger than the sum of its proper divisors (1).

101105504989 is an equidigital number, since it uses as much as digits as its factorization.

101105504989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 43.

The spelling of 101105504989 in words is "one hundred one billion, one hundred five million, five hundred four thousand, nine hundred eighty-nine".