478235197477 has 2 divisors, whose sum is σ = 478235197478. Its totient is φ = 478235197476.

The previous prime is 478235197421. The next prime is 478235197501. The reversal of 478235197477 is 774791532874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371677999716 + 106557197761 = 609654^2 + 326431^2 .

It is a cyclic number.

It is not a de Polignac number, because 478235197477 - 2³⁵ = 443875459109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478235197777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239117598738 + 239117598739.

It is an arithmetic number, because the mean of its divisors is an integer number (239117598739).

Almost surely, 2^478235197477 is an apocalyptic number.

It is an amenable number.

478235197477 is a deficient number, since it is larger than the sum of its proper divisors (1).

478235197477 is an equidigital number, since it uses as much as digits as its factorization.

478235197477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82978560, while the sum is 64.

The spelling of 478235197477 in words is "four hundred seventy-eight billion, two hundred thirty-five million, one hundred ninety-seven thousand, four hundred seventy-seven".