87475166565 has 64 divisors (see below), whose sum is σ = 148433280000. Its totient is φ = 43867090944.

The previous prime is 87475166563. The next prime is 87475166591. The reversal of 87475166565 is 56566157478.

It is a happy number.

It is not a de Polignac number, because 87475166565 - 2¹ = 87475166563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87475166499 and 87475166508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87475166563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27445902 + ... + 27449088.

It is an arithmetic number, because the mean of its divisors is an integer number (2319270000).

Almost surely, 2^87475166565 is an apocalyptic number.

It is an amenable number.

87475166565 is a deficient number, since it is larger than the sum of its proper divisors (60958113435).

87475166565 is a wasteful number, since it uses less digits than its factorization.

87475166565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3906.

The product of its digits is 42336000, while the sum is 60.

The spelling of 87475166565 in words is "eighty-seven billion, four hundred seventy-five million, one hundred sixty-six thousand, five hundred sixty-five".