87823433629 has 2 divisors, whose sum is σ = 87823433630. Its totient is φ = 87823433628.

The previous prime is 87823433609. The next prime is 87823433693. The reversal of 87823433629 is 92633432878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71240948100 + 16582485529 = 266910^2 + 128773^2 .

It is a cyclic number.

It is not a de Polignac number, because 87823433629 - 2¹¹ = 87823431581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87823433629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87823433609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43911716814 + 43911716815.

It is an arithmetic number, because the mean of its divisors is an integer number (43911716815).

Almost surely, 2^87823433629 is an apocalyptic number.

It is an amenable number.

87823433629 is a deficient number, since it is larger than the sum of its proper divisors (1).

87823433629 is an equidigital number, since it uses as much as digits as its factorization.

87823433629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 55.

The spelling of 87823433629 in words is "eighty-seven billion, eight hundred twenty-three million, four hundred thirty-three thousand, six hundred twenty-nine".