63078663530781 has 24 divisors (see below), whose sum is σ = 91315869829184. Its totient is φ = 41959104425280.

The previous prime is 63078663530689. The next prime is 63078663530783. The reversal of 63078663530781 is 18703536687036.

63078663530781 is a `hidden beast` number, since 6 + 30 + 7 + 8 + 6 + 63 + 530 + 7 + 8 + 1 = 666.

It is not a de Polignac number, because 63078663530781 - 2¹⁰ = 63078663529757 is a prime.

It is a super-2 number, since 2×63078663530781² (a number of 28 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 (63078663530783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140568090 + ... + 141016116.

Almost surely, 2^{63078663530781} is an apocalyptic number.

It is an amenable number.

63078663530781 is a deficient number, since it is larger than the sum of its proper divisors (28237206298403).

63078663530781 is a wasteful number, since it uses less digits than its factorization.

63078663530781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482721 (or 482718 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 63.

The spelling of 63078663530781 in words is "sixty-three trillion, seventy-eight billion, six hundred sixty-three million, five hundred thirty thousand, seven hundred eighty-one".