86551234449899 has 2 divisors, whose sum is σ = 86551234449900. Its totient is φ = 86551234449898.

The previous prime is 86551234449887. The next prime is 86551234449907. The reversal of 86551234449899 is 99894443215568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86551234449899 - 2¹² = 86551234445803 is a prime.

It is a super-2 number, since 2×86551234449899² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (86551234449829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43275617224949 + 43275617224950.

It is an arithmetic number, because the mean of its divisors is an integer number (43275617224950).

Almost surely, 2^{86551234449899} is an apocalyptic number.

86551234449899 is a deficient number, since it is larger than the sum of its proper divisors (1).

86551234449899 is an equidigital number, since it uses as much as digits as its factorization.

86551234449899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2687385600, while the sum is 77.

The spelling of 86551234449899 in words is "eighty-six trillion, five hundred fifty-one billion, two hundred thirty-four million, four hundred forty-nine thousand, eight hundred ninety-nine".