1271715110520 has 128 divisors (see below), whose sum is σ = 3914709583680. Its totient is φ = 330301440000.

The previous prime is 1271715110513. The next prime is 1271715110551. The reversal of 1271715110520 is 250115171721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2741880 + ... + 3171960.

Almost surely, 2^{1271715110520} is an apocalyptic number.

1271715110520 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 1271715110520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957354791840).

1271715110520 is an abundant number, since it is smaller than the sum of its proper divisors (2642994473160).

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

1271715110520 is a wasteful number, since it uses less digits than its factorization.

1271715110520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430737 (or 430733 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 33.

The spelling of 1271715110520 in words is "one trillion, two hundred seventy-one billion, seven hundred fifteen million, one hundred ten thousand, five hundred twenty".