478113240794389 has 2 divisors, whose sum is σ = 478113240794390. Its totient is φ = 478113240794388.

The previous prime is 478113240794353. The next prime is 478113240794467. The reversal of 478113240794389 is 983497042311874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477124294080625 + 988946713764 = 21843175^2 + 994458^2 .

It is a cyclic number.

It is not a de Polignac number, because 478113240794389 - 2⁷ = 478113240794261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478113240794489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239056620397194 + 239056620397195.

It is an arithmetic number, because the mean of its divisors is an integer number (239056620397195).

Almost surely, 2^{478113240794389} is an apocalyptic number.

It is an amenable number.

478113240794389 is a deficient number, since it is larger than the sum of its proper divisors (1).

478113240794389 is an equidigital number, since it uses as much as digits as its factorization.

478113240794389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 292626432, while the sum is 70.

The spelling of 478113240794389 in words is "four hundred seventy-eight trillion, one hundred thirteen billion, two hundred forty million, seven hundred ninety-four thousand, three hundred eighty-nine".