100961168489 has 2 divisors, whose sum is σ = 100961168490. Its totient is φ = 100961168488.

The previous prime is 100961168459. The next prime is 100961168521. The reversal of 100961168489 is 984861169001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88625290000 + 12335878489 = 297700^2 + 111067^2 .

It is a cyclic number.

It is not a de Polignac number, because 100961168489 - 2³⁶ = 32241691753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100961168489.

It is not a weakly prime, because it can be changed into another prime (100961168459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50480584244 + 50480584245.

It is an arithmetic number, because the mean of its divisors is an integer number (50480584245).

Almost surely, 2^100961168489 is an apocalyptic number.

It is an amenable number.

100961168489 is a deficient number, since it is larger than the sum of its proper divisors (1).

100961168489 is an equidigital number, since it uses as much as digits as its factorization.

100961168489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 53.

The spelling of 100961168489 in words is "one hundred billion, nine hundred sixty-one million, one hundred sixty-eight thousand, four hundred eighty-nine".