87235567873 has 16 divisors (see below), whose sum is σ = 89396596800. Its totient is φ = 85099530240.

The previous prime is 87235567829. The next prime is 87235567889. The reversal of 87235567873 is 37876553278.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87235567873 - 2¹³ = 87235559681 is a prime.

It is a super-2 number, since 2×87235567873² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87235567973) 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, 4647918 + ... + 4666648.

It is an arithmetic number, because the mean of its divisors is an integer number (5587287300).

Almost surely, 2^87235567873 is an apocalyptic number.

It is an amenable number.

87235567873 is a deficient number, since it is larger than the sum of its proper divisors (2161028927).

87235567873 is a wasteful number, since it uses less digits than its factorization.

87235567873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19392.

The product of its digits is 59270400, while the sum is 61.

The spelling of 87235567873 in words is "eighty-seven billion, two hundred thirty-five million, five hundred sixty-seven thousand, eight hundred seventy-three".