1271167497180 has 216 divisors, whose sum is σ = 4500025337808. Its totient is φ = 289605528576.

The previous prime is 1271167497161. The next prime is 1271167497263. The reversal of 1271167497180 is 817947611721.

1271167497180 is a `hidden beast` number, since 1 + 2 + 7 + 11 + 67 + 497 + 1 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2473012 + ... + 2942468.

It is an arithmetic number, because the mean of its divisors is an integer number (20833450638).

Almost surely, 2^{1271167497180} is an apocalyptic number.

1271167497180 is a gapful number since it is divisible by the number (10) 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 1271167497180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2250012668904).

1271167497180 is an abundant number, since it is smaller than the sum of its proper divisors (3228857840628).

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

1271167497180 is a wasteful number, since it uses less digits than its factorization.

1271167497180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469793 (or 469781 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 54.

The spelling of 1271167497180 in words is "one trillion, two hundred seventy-one billion, one hundred sixty-seven million, four hundred ninety-seven thousand, one hundred eighty".