84975724793 has 2 divisors, whose sum is σ = 84975724794. Its totient is φ = 84975724792.

The previous prime is 84975724789. The next prime is 84975724831. The reversal of 84975724793 is 39742757948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74274236089 + 10701488704 = 272533^2 + 103448^2 .

It is a cyclic number.

It is not a de Polignac number, because 84975724793 - 2² = 84975724789 is a prime.

It is not a weakly prime, because it can be changed into another prime (84975723793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42487862396 + 42487862397.

It is an arithmetic number, because the mean of its divisors is an integer number (42487862397).

Almost surely, 2^84975724793 is an apocalyptic number.

It is an amenable number.

84975724793 is a deficient number, since it is larger than the sum of its proper divisors (1).

84975724793 is an equidigital number, since it uses as much as digits as its factorization.

84975724793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106686720, while the sum is 65.

The spelling of 84975724793 in words is "eighty-four billion, nine hundred seventy-five million, seven hundred twenty-four thousand, seven hundred ninety-three".