1263876630678 has 36 divisors (see below), whose sum is σ = 2836083087708. Its totient is φ = 406764887760.

The previous prime is 1263876630671. The next prime is 1263876630689. The reversal of 1263876630678 is 8760366783621.

1263876630678 is a `hidden beast` number, since 1 + 263 + 8 + 7 + 66 + 306 + 7 + 8 = 666.

It is a super-2 number, since 2×1263876630678² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263876630671) 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 17 ways as a sum of consecutive naturals, for example, 41730028 + ... + 41760303.

Almost surely, 2^{1263876630678} is an apocalyptic number.

1263876630678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1263876630678 is an abundant number, since it is smaller than the sum of its proper divisors (1572206457030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263876630678 is a wasteful number, since it uses less digits than its factorization.

1263876630678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83490397 (or 83490365 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 63.

The spelling of 1263876630678 in words is "one trillion, two hundred sixty-three billion, eight hundred seventy-six million, six hundred thirty thousand, six hundred seventy-eight".