87156237167 has 4 divisors (see below), whose sum is σ = 87307288416. Its totient is φ = 87005185920.

The previous prime is 87156237139. The next prime is 87156237209. The reversal of 87156237167 is 76173265178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87156237167 - 2⁸ = 87156236911 is a prime.

It is a super-2 number, since 2×87156237167² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87156237127) 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, 75524759 + ... + 75525912.

It is an arithmetic number, because the mean of its divisors is an integer number (21826822104).

Almost surely, 2^87156237167 is an apocalyptic number.

87156237167 is a deficient number, since it is larger than the sum of its proper divisors (151051249).

87156237167 is a wasteful number, since it uses less digits than its factorization.

87156237167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151051248.

The product of its digits is 2963520, while the sum is 53.

The spelling of 87156237167 in words is "eighty-seven billion, one hundred fifty-six million, two hundred thirty-seven thousand, one hundred sixty-seven".