63078506405 has 4 divisors (see below), whose sum is σ = 75694207692. Its totient is φ = 50462805120.

The previous prime is 63078506377. The next prime is 63078506459. The reversal of 63078506405 is 50460587036.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44133186241 + 18945320164 = 210079^2 + 137642^2 .

It is not a de Polignac number, because 63078506405 - 2⁸ = 63078506149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6307850636 + ... + 6307850645.

It is an arithmetic number, because the mean of its divisors is an integer number (18923551923).

Almost surely, 2^63078506405 is an apocalyptic number.

It is an amenable number.

63078506405 is a deficient number, since it is larger than the sum of its proper divisors (12615701287).

63078506405 is a wasteful number, since it uses less digits than its factorization.

63078506405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615701286.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 63078506405 in words is "sixty-three billion, seventy-eight million, five hundred six thousand, four hundred five".