84642024653 has 2 divisors, whose sum is σ = 84642024654. Its totient is φ = 84642024652.

The previous prime is 84642024637. The next prime is 84642024671. The reversal of 84642024653 is 35642024648.

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., 84554171524 + 87853129 = 290782^2 + 9373^2 .

It is a cyclic number.

It is not a de Polignac number, because 84642024653 - 2⁴ = 84642024637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84642024673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42321012326 + 42321012327.

It is an arithmetic number, because the mean of its divisors is an integer number (42321012327).

Almost surely, 2^84642024653 is an apocalyptic number.

It is an amenable number.

84642024653 is a deficient number, since it is larger than the sum of its proper divisors (1).

84642024653 is an equidigital number, since it uses as much as digits as its factorization.

84642024653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1105920, while the sum is 44.

The spelling of 84642024653 in words is "eighty-four billion, six hundred forty-two million, twenty-four thousand, six hundred fifty-three".