87837365909 has 4 divisors (see below), whose sum is σ = 93004269804. Its totient is φ = 82670462016.

The previous prime is 87837365897. The next prime is 87837365933. The reversal of 87837365909 is 90956373878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73316392900 + 14520973009 = 270770^2 + 120503^2 .

It is a cyclic number.

It is not a de Polignac number, because 87837365909 - 2²⁰ = 87836317333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87837365809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583451922 + ... + 2583451955.

It is an arithmetic number, because the mean of its divisors is an integer number (23251067451).

Almost surely, 2^87837365909 is an apocalyptic number.

It is an amenable number.

87837365909 is a deficient number, since it is larger than the sum of its proper divisors (5166903895).

87837365909 is a wasteful number, since it uses less digits than its factorization.

87837365909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166903894.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 87837365909 in words is "eighty-seven billion, eight hundred thirty-seven million, three hundred sixty-five thousand, nine hundred nine".