87711622731 has 12 divisors (see below), whose sum is σ = 126699395160. Its totient is φ = 58472186400.

The previous prime is 87711622729. The next prime is 87711622769. The reversal of 87711622731 is 13722611778.

87711622731 is a `hidden beast` number, since 8 + 7 + 7 + 11 + 622 + 7 + 3 + 1 = 666.

It is not a de Polignac number, because 87711622731 - 2¹ = 87711622729 is a prime.

It is a super-2 number, since 2×87711622731² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (87711626731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84156 + ... + 427206.

It is an arithmetic number, because the mean of its divisors is an integer number (10558282930).

Almost surely, 2^87711622731 is an apocalyptic number.

87711622731 is a deficient number, since it is larger than the sum of its proper divisors (38987772429).

87711622731 is a wasteful number, since it uses less digits than its factorization.

87711622731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371466 (or 371463 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The spelling of 87711622731 in words is "eighty-seven billion, seven hundred eleven million, six hundred twenty-two thousand, seven hundred thirty-one".