84843707497 has 2 divisors, whose sum is σ = 84843707498. Its totient is φ = 84843707496.

The previous prime is 84843707467. The next prime is 84843707569. The reversal of 84843707497 is 79470734848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77698217536 + 7145489961 = 278744^2 + 84531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84843707497 is a prime.

It is not a weakly prime, because it can be changed into another prime (84843707437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42421853748 + 42421853749.

It is an arithmetic number, because the mean of its divisors is an integer number (42421853749).

Almost surely, 2^84843707497 is an apocalyptic number.

It is an amenable number.

84843707497 is a deficient number, since it is larger than the sum of its proper divisors (1).

84843707497 is an equidigital number, since it uses as much as digits as its factorization.

84843707497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37933056, while the sum is 61.

The spelling of 84843707497 in words is "eighty-four billion, eight hundred forty-three million, seven hundred seven thousand, four hundred ninety-seven".