63078856831 has 4 divisors (see below), whose sum is σ = 63122092600. Its totient is φ = 63035621064.

The previous prime is 63078856811. The next prime is 63078856879. The reversal of 63078856831 is 13865887036.

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

It is a cyclic number.

It is not a de Polignac number, because 63078856831 - 2⁷ = 63078856703 is a prime.

It is a super-2 number, since 2×63078856831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63078856801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21615696 + ... + 21618613.

It is an arithmetic number, because the mean of its divisors is an integer number (15780523150).

Almost surely, 2^63078856831 is an apocalyptic number.

63078856831 is a deficient number, since it is larger than the sum of its proper divisors (43235769).

63078856831 is a wasteful number, since it uses less digits than its factorization.

63078856831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43235768.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 63078856831 in words is "sixty-three billion, seventy-eight million, eight hundred fifty-six thousand, eight hundred thirty-one".