87105435773 has 2 divisors, whose sum is σ = 87105435774. Its totient is φ = 87105435772.

The previous prime is 87105435707. The next prime is 87105435847. The reversal of 87105435773 is 37753450178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63545334724 + 23560101049 = 252082^2 + 153493^2 .

It is a cyclic number.

It is not a de Polignac number, because 87105435773 - 2²⁰ = 87104387197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87105435073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43552717886 + 43552717887.

It is an arithmetic number, because the mean of its divisors is an integer number (43552717887).

Almost surely, 2^87105435773 is an apocalyptic number.

It is an amenable number.

87105435773 is a deficient number, since it is larger than the sum of its proper divisors (1).

87105435773 is an equidigital number, since it uses as much as digits as its factorization.

87105435773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 87105435773 in words is "eighty-seven billion, one hundred five million, four hundred thirty-five thousand, seven hundred seventy-three".