86225068878721 has 2 divisors, whose sum is σ = 86225068878722. Its totient is φ = 86225068878720.

The previous prime is 86225068878677. The next prime is 86225068878787. The reversal of 86225068878721 is 12787886052268.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51044037429121 + 35181031449600 = 7144511^2 + 5931360^2 .

It is a cyclic number.

It is not a de Polignac number, because 86225068878721 - 2²⁷ = 86224934660993 is a prime.

It is not a weakly prime, because it can be changed into another prime (86225068278721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43112534439360 + 43112534439361.

It is an arithmetic number, because the mean of its divisors is an integer number (43112534439361).

Almost surely, 2^{86225068878721} is an apocalyptic number.

It is an amenable number.

86225068878721 is a deficient number, since it is larger than the sum of its proper divisors (1).

86225068878721 is an equidigital number, since it uses as much as digits as its factorization.

86225068878721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 289013760, while the sum is 70.

The spelling of 86225068878721 in words is "eighty-six trillion, two hundred twenty-five billion, sixty-eight million, eight hundred seventy-eight thousand, seven hundred twenty-one".