86119431887 has 2 divisors, whose sum is σ = 86119431888. Its totient is φ = 86119431886.

The previous prime is 86119431857. The next prime is 86119431913. The reversal of 86119431887 is 78813491168.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86119431887 - 2¹⁸ = 86119169743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86119431817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43059715943 + 43059715944.

It is an arithmetic number, because the mean of its divisors is an integer number (43059715944).

Almost surely, 2^86119431887 is an apocalyptic number.

86119431887 is a deficient number, since it is larger than the sum of its proper divisors (1).

86119431887 is an equidigital number, since it uses as much as digits as its factorization.

86119431887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 56.

The spelling of 86119431887 in words is "eighty-six billion, one hundred nineteen million, four hundred thirty-one thousand, eight hundred eighty-seven".