87805845369 has 32 divisors (see below), whose sum is σ = 141933329280. Its totient is φ = 53206329600.

The previous prime is 87805845367. The next prime is 87805845401. The reversal of 87805845369 is 96354850878.

87805845369 is a `hidden beast` number, since 8 + 78 + 0 + 58 + 453 + 69 = 666.

It is not a de Polignac number, because 87805845369 - 2¹ = 87805845367 is a prime.

It is a super-2 number, since 2×87805845369² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87805845367) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1914069 + ... + 1959405.

It is an arithmetic number, because the mean of its divisors is an integer number (4435416540).

Almost surely, 2^87805845369 is an apocalyptic number.

It is an amenable number.

87805845369 is a deficient number, since it is larger than the sum of its proper divisors (54127483911).

87805845369 is a wasteful number, since it uses less digits than its factorization.

87805845369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51878 (or 51872 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 87805845369 in words is "eighty-seven billion, eight hundred five million, eight hundred forty-five thousand, three hundred sixty-nine".