87569060813 has 4 divisors (see below), whose sum is σ = 94305142428. Its totient is φ = 80832979200.

The previous prime is 87569060797. The next prime is 87569060819. The reversal of 87569060813 is 31806096578.

It is a happy number.

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 21436766569 + 66132294244 = 146413^2 + 257162^2 .

It is a cyclic number.

It is not a de Polignac number, because 87569060813 - 2⁴ = 87569060797 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 (87569060819) 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, 3368040788 + ... + 3368040813.

It is an arithmetic number, because the mean of its divisors is an integer number (23576285607).

Almost surely, 2^87569060813 is an apocalyptic number.

It is an amenable number.

87569060813 is a deficient number, since it is larger than the sum of its proper divisors (6736081615).

87569060813 is a wasteful number, since it uses less digits than its factorization.

87569060813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736081614.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 87569060813 in words is "eighty-seven billion, five hundred sixty-nine million, sixty thousand, eight hundred thirteen".