87252866861 has 8 divisors (see below), whose sum is σ = 91188081600. Its totient is φ = 83329453152.

The previous prime is 87252866819. The next prime is 87252866873. The reversal of 87252866861 is 16866825278.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87252866861 is a prime.

It is a super-2 number, since 2×87252866861² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87252866861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87252866161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2935136 + ... + 2964713.

It is an arithmetic number, because the mean of its divisors is an integer number (11398510200).

Almost surely, 2^87252866861 is an apocalyptic number.

It is an amenable number.

87252866861 is a deficient number, since it is larger than the sum of its proper divisors (3935214739).

87252866861 is a wasteful number, since it uses less digits than its factorization.

87252866861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900515.

The product of its digits is 15482880, while the sum is 59.

The spelling of 87252866861 in words is "eighty-seven billion, two hundred fifty-two million, eight hundred sixty-six thousand, eight hundred sixty-one".