478142897893 has 2 divisors, whose sum is σ = 478142897894. Its totient is φ = 478142897892.

The previous prime is 478142897849. The next prime is 478142897899. The reversal of 478142897893 is 398798241874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294943489569 + 183199408324 = 543087^2 + 428018^2 .

It is a cyclic number.

It is not a de Polignac number, because 478142897893 - 2²⁵ = 478109343461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478142897899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239071448946 + 239071448947.

It is an arithmetic number, because the mean of its divisors is an integer number (239071448947).

Almost surely, 2^478142897893 is an apocalyptic number.

It is an amenable number.

478142897893 is a deficient number, since it is larger than the sum of its proper divisors (1).

478142897893 is an equidigital number, since it uses as much as digits as its factorization.

478142897893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195084288, while the sum is 70.

The spelling of 478142897893 in words is "four hundred seventy-eight billion, one hundred forty-two million, eight hundred ninety-seven thousand, eight hundred ninety-three".