63078686837 has 4 divisors (see below), whose sum is σ = 64617191436. Its totient is φ = 61540182240.

The previous prime is 63078686833. The next prime is 63078686897. The reversal of 63078686837 is 73868687036.

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 5551144036 + 57527542801 = 74506^2 + 239849^2 .

It is a cyclic number.

It is not a de Polignac number, because 63078686837 - 2² = 63078686833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63078686837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63078686833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769252238 + ... + 769252319.

It is an arithmetic number, because the mean of its divisors is an integer number (16154297859).

Almost surely, 2^63078686837 is an apocalyptic number.

It is an amenable number.

63078686837 is a deficient number, since it is larger than the sum of its proper divisors (1538504599).

63078686837 is a wasteful number, since it uses less digits than its factorization.

63078686837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538504598.

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 63078686837 in words is "sixty-three billion, seventy-eight million, six hundred eighty-six thousand, eight hundred thirty-seven".