86567049919949 has 2 divisors, whose sum is σ = 86567049919950. Its totient is φ = 86567049919948.

The previous prime is 86567049919943. The next prime is 86567049919951. The reversal of 86567049919949 is 94991994076568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79707077005924 + 6859972914025 = 8927882^2 + 2619155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86567049919949 is a prime.

Together with 86567049919951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86567049919943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43283524959974 + 43283524959975.

It is an arithmetic number, because the mean of its divisors is an integer number (43283524959975).

Almost surely, 2^{86567049919949} is an apocalyptic number.

It is an amenable number.

86567049919949 is a deficient number, since it is larger than the sum of its proper divisors (1).

86567049919949 is an equidigital number, since it uses as much as digits as its factorization.

86567049919949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9523422720, while the sum is 86.

The spelling of 86567049919949 in words is "eighty-six trillion, five hundred sixty-seven billion, forty-nine million, nine hundred nineteen thousand, nine hundred forty-nine".