87566657873 has 16 divisors (see below), whose sum is σ = 94802235840. Its totient is φ = 80600184000.

The previous prime is 87566657851. The next prime is 87566657879. The reversal of 87566657873 is 37875666578.

It is a cyclic number.

It is not a de Polignac number, because 87566657873 - 2⁶ = 87566657809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87566657879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403958 + ... + 581648.

It is an arithmetic number, because the mean of its divisors is an integer number (5925139740).

Almost surely, 2^87566657873 is an apocalyptic number.

It is an amenable number.

87566657873 is a deficient number, since it is larger than the sum of its proper divisors (7235577967).

87566657873 is a wasteful number, since it uses less digits than its factorization.

87566657873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178448.

The product of its digits is 355622400, while the sum is 68.

The spelling of 87566657873 in words is "eighty-seven billion, five hundred sixty-six million, six hundred fifty-seven thousand, eight hundred seventy-three".