1271938862268 has 36 divisors (see below), whose sum is σ = 3215213350440. Its totient is φ = 423975063456.

The previous prime is 1271938862237. The next prime is 1271938862281. The reversal of 1271938862268 is 8622688391721.

1271938862268 is a `hidden beast` number, since 1 + 27 + 1 + 9 + 388 + 6 + 226 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1271938862268³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5757678 + ... + 5974506.

Almost surely, 2^{1271938862268} is an apocalyptic number.

1271938862268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1271938862268 is an abundant number, since it is smaller than the sum of its proper divisors (1943274488172).

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

1271938862268 is a wasteful number, since it uses less digits than its factorization.

1271938862268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379786 (or 379781 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 63.

The spelling of 1271938862268 in words is "one trillion, two hundred seventy-one billion, nine hundred thirty-eight million, eight hundred sixty-two thousand, two hundred sixty-eight".