87549697009 has 4 divisors (see below), whose sum is σ = 92699679204. Its totient is φ = 82399714816.

The previous prime is 87549696967. The next prime is 87549697069. The reversal of 87549697009 is 90079694578.

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 82059331600 + 5490365409 = 286460^2 + 74097^2 .

It is not a de Polignac number, because 87549697009 - 2³⁵ = 53189958641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87549697069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574991072 + ... + 2574991105.

It is an arithmetic number, because the mean of its divisors is an integer number (23174919801).

Almost surely, 2^87549697009 is an apocalyptic number.

It is an amenable number.

87549697009 is a deficient number, since it is larger than the sum of its proper divisors (5149982195).

87549697009 is a wasteful number, since it uses less digits than its factorization.

87549697009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149982194.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 87549697009 in words is "eighty-seven billion, five hundred forty-nine million, six hundred ninety-seven thousand, nine".