84004663531 has 2 divisors, whose sum is σ = 84004663532. Its totient is φ = 84004663530.

The previous prime is 84004663499. The next prime is 84004663537. The reversal of 84004663531 is 13536640048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84004663531 - 2⁵ = 84004663499 is a prime.

It is a super-2 number, since 2×84004663531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84004663537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42002331765 + 42002331766.

It is an arithmetic number, because the mean of its divisors is an integer number (42002331766).

Almost surely, 2^84004663531 is an apocalyptic number.

84004663531 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004663531 is an equidigital number, since it uses as much as digits as its factorization.

84004663531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 84004663531 in words is "eighty-four billion, four million, six hundred sixty-three thousand, five hundred thirty-one".