86731427987 has 2 divisors, whose sum is σ = 86731427988. Its totient is φ = 86731427986.

The previous prime is 86731427963. The next prime is 86731428011. The reversal of 86731427987 is 78972413768.

It is a balanced prime because it is at equal distance from previous prime (86731427963) and next prime (86731428011).

It is a cyclic number.

It is not a de Polignac number, because 86731427987 - 2¹⁶ = 86731362451 is a prime.

It is not a weakly prime, because it can be changed into another prime (86731427947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365713993 + 43365713994.

It is an arithmetic number, because the mean of its divisors is an integer number (43365713994).

Almost surely, 2^86731427987 is an apocalyptic number.

86731427987 is a deficient number, since it is larger than the sum of its proper divisors (1).

86731427987 is an equidigital number, since it uses as much as digits as its factorization.

86731427987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28449792, while the sum is 62.

The spelling of 86731427987 in words is "eighty-six billion, seven hundred thirty-one million, four hundred twenty-seven thousand, nine hundred eighty-seven".