84518184949651 has 2 divisors, whose sum is σ = 84518184949652. Its totient is φ = 84518184949650.

The previous prime is 84518184949613. The next prime is 84518184949817. The reversal of 84518184949651 is 15694948181548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84518184949651 - 2¹⁵ = 84518184916883 is a prime.

It is not a weakly prime, because it can be changed into another prime (84518184943651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42259092474825 + 42259092474826.

It is an arithmetic number, because the mean of its divisors is an integer number (42259092474826).

Almost surely, 2^{84518184949651} is an apocalyptic number.

84518184949651 is a deficient number, since it is larger than the sum of its proper divisors (1).

84518184949651 is an equidigital number, since it uses as much as digits as its factorization.

84518184949651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 398131200, while the sum is 73.

The spelling of 84518184949651 in words is "eighty-four trillion, five hundred eighteen billion, one hundred eighty-four million, nine hundred forty-nine thousand, six hundred fifty-one".