63078856681 has 8 divisors (see below), whose sum is σ = 65257542720. Its totient is φ = 60900407568.

The previous prime is 63078856661. The next prime is 63078856703. The reversal of 63078856681 is 18665887036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63078856681 - 2¹³ = 63078848489 is a prime.

It is a super-2 number, since 2×63078856681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63078856661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611230 + ... + 706936.

It is an arithmetic number, because the mean of its divisors is an integer number (8157192840).

Almost surely, 2^63078856681 is an apocalyptic number.

It is an amenable number.

63078856681 is a deficient number, since it is larger than the sum of its proper divisors (2178686039).

63078856681 is a wasteful number, since it uses less digits than its factorization.

63078856681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118463.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 63078856681 in words is "sixty-three billion, seventy-eight million, eight hundred fifty-six thousand, six hundred eighty-one".