84830477993 has 2 divisors, whose sum is σ = 84830477994. Its totient is φ = 84830477992.

The previous prime is 84830477957. The next prime is 84830478037. The reversal of 84830477993 is 39977403848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64651707289 + 20178770704 = 254267^2 + 142052^2 .

It is a cyclic number.

It is not a de Polignac number, because 84830477993 - 2⁶ = 84830477929 is a prime.

It is not a weakly prime, because it can be changed into another prime (84830477393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42415238996 + 42415238997.

It is an arithmetic number, because the mean of its divisors is an integer number (42415238997).

Almost surely, 2^84830477993 is an apocalyptic number.

It is an amenable number.

84830477993 is a deficient number, since it is larger than the sum of its proper divisors (1).

84830477993 is an equidigital number, since it uses as much as digits as its factorization.

84830477993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 62.

The spelling of 84830477993 in words is "eighty-four billion, eight hundred thirty million, four hundred seventy-seven thousand, nine hundred ninety-three".