478375291393 has 2 divisors, whose sum is σ = 478375291394. Its totient is φ = 478375291392.

The previous prime is 478375291333. The next prime is 478375291453. The reversal of 478375291393 is 393192573874.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (478375291333) and next prime (478375291453).

It can be written as a sum of positive squares in only one way, i.e., 271220140944 + 207155150449 = 520788^2 + 455143^2 .

It is a cyclic number.

It is not a de Polignac number, because 478375291393 - 2¹³ = 478375283201 is a prime.

It is not a weakly prime, because it can be changed into another prime (478375291333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239187645696 + 239187645697.

It is an arithmetic number, because the mean of its divisors is an integer number (239187645697).

Almost surely, 2^478375291393 is an apocalyptic number.

It is an amenable number.

478375291393 is a deficient number, since it is larger than the sum of its proper divisors (1).

478375291393 is an equidigital number, since it uses as much as digits as its factorization.

478375291393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34292160, while the sum is 61.

The spelling of 478375291393 in words is "four hundred seventy-eight billion, three hundred seventy-five million, two hundred ninety-one thousand, three hundred ninety-three".