1271078969328 has 320 divisors, whose sum is σ = 4213123200000. Its totient is φ = 359388804096.

The previous prime is 1271078969311. The next prime is 1271078969357. The reversal of 1271078969328 is 8239698701721.

1271078969328 is a `hidden beast` number, since 127 + 107 + 89 + 6 + 9 + 328 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 462377298 + ... + 462380046.

It is an arithmetic number, because the mean of its divisors is an integer number (13166010000).

Almost surely, 2^{1271078969328} is an apocalyptic number.

1271078969328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1271078969328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2106561600000).

1271078969328 is an abundant number, since it is smaller than the sum of its proper divisors (2942044230672).

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

1271078969328 is a wasteful number, since it uses less digits than its factorization.

1271078969328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309 (or 4297 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 1271078969328 in words is "one trillion, two hundred seventy-one billion, seventy-eight million, nine hundred sixty-nine thousand, three hundred twenty-eight".