478901399117 has 2 divisors, whose sum is σ = 478901399118. Its totient is φ = 478901399116.

The previous prime is 478901399069. The next prime is 478901399189. The reversal of 478901399117 is 711993109874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 436195523401 + 42705875716 = 660451^2 + 206654^2 .

It is a cyclic number.

It is not a de Polignac number, because 478901399117 - 2²⁸ = 478632963661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478901390117) 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, 239450699558 + 239450699559.

It is an arithmetic number, because the mean of its divisors is an integer number (239450699559).

Almost surely, 2^478901399117 is an apocalyptic number.

It is an amenable number.

478901399117 is a deficient number, since it is larger than the sum of its proper divisors (1).

478901399117 is an equidigital number, since it uses as much as digits as its factorization.

478901399117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 59.

The spelling of 478901399117 in words is "four hundred seventy-eight billion, nine hundred one million, three hundred ninety-nine thousand, one hundred seventeen".