87162844731 has 4 divisors (see below), whose sum is σ = 116217126312. Its totient is φ = 58108563152.

The previous prime is 87162844729. The next prime is 87162844753. The reversal of 87162844731 is 13744826178.

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 87162844731 - 2¹ = 87162844729 is a prime.

It is a super-2 number, since 2×87162844731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87162840731) 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, 14527140786 + ... + 14527140791.

It is an arithmetic number, because the mean of its divisors is an integer number (29054281578).

Almost surely, 2^87162844731 is an apocalyptic number.

87162844731 is a deficient number, since it is larger than the sum of its proper divisors (29054281581).

87162844731 is a wasteful number, since it uses less digits than its factorization.

87162844731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29054281580.

The product of its digits is 1806336, while the sum is 51.

The spelling of 87162844731 in words is "eighty-seven billion, one hundred sixty-two million, eight hundred forty-four thousand, seven hundred thirty-one".