1271886400080 has 60 divisors (see below), whose sum is σ = 4271418496020. Its totient is φ = 339169706496.

The previous prime is 1271886400039. The next prime is 1271886400093. The reversal of 1271886400080 is 800046881721.

It can be written as a sum of positive squares in 2 ways, for example, as 850519239696 + 421367160384 = 922236^2 + 649128^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1271886399999 and 1271886400035.

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, 883253725 + ... + 883255164.

It is an arithmetic number, because the mean of its divisors is an integer number (71190308267).

Almost surely, 2^{1271886400080} is an apocalyptic number.

1271886400080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1271886400080 is an abundant number, since it is smaller than the sum of its proper divisors (2999532095940).

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

1271886400080 is a wasteful number, since it uses less digits than its factorization.

1271886400080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766508908 (or 1766508899 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 1271886400080 in words is "one trillion, two hundred seventy-one billion, eight hundred eighty-six million, four hundred thousand, eighty".