1263318881382 has 12 divisors (see below), whose sum is σ = 2737190909700. Its totient is φ = 421106293788.

The previous prime is 1263318881381. The next prime is 1263318881413. The reversal of 1263318881382 is 2831888133621.

1263318881382 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 3 + 188 + 81 + 382 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263318881381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35092191132 + ... + 35092191167.

It is an arithmetic number, because the mean of its divisors is an integer number (228099242475).

Almost surely, 2^{1263318881382} is an apocalyptic number.

1263318881382 is an abundant number, since it is smaller than the sum of its proper divisors (1473872028318).

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

1263318881382 is a wasteful number, since it uses less digits than its factorization.

1263318881382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70184382307 (or 70184382304 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 1263318881382 in words is "one trillion, two hundred sixty-three billion, three hundred eighteen million, eight hundred eighty-one thousand, three hundred eighty-two".