86911237791 has 32 divisors (see below), whose sum is σ = 148088622080. Its totient is φ = 49347219168.

The previous prime is 86911237747. The next prime is 86911237799. The reversal of 86911237791 is 19773211968.

It is a happy number.

It is not a de Polignac number, because 86911237791 - 2⁷ = 86911237663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86911237799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1434811 + ... + 1494156.

It is an arithmetic number, because the mean of its divisors is an integer number (4627769440).

Almost surely, 2^86911237791 is an apocalyptic number.

86911237791 is a deficient number, since it is larger than the sum of its proper divisors (61177384289).

86911237791 is a wasteful number, since it uses less digits than its factorization.

86911237791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929140 (or 2929134 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The spelling of 86911237791 in words is "eighty-six billion, nine hundred eleven million, two hundred thirty-seven thousand, seven hundred ninety-one".