1272182452856 has 32 divisors (see below), whose sum is σ = 2758949907840. Its totient is φ = 538652120928.

The previous prime is 1272182452799. The next prime is 1272182452873. The reversal of 1272182452856 is 6582542812721.

It is a junction number, because it is equal to n+sod(n) for n = 1272182452798 and 1272182452807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136848026 + ... + 136857321.

It is an arithmetic number, because the mean of its divisors is an integer number (86217184620).

Almost surely, 2^{1272182452856} is an apocalyptic number.

It is an amenable number.

1272182452856 is an abundant number, since it is smaller than the sum of its proper divisors (1486767454984).

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

1272182452856 is a wasteful number, since it uses less digits than its factorization.

1272182452856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273705443 (or 273705439 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 53.

The spelling of 1272182452856 in words is "one trillion, two hundred seventy-two billion, one hundred eighty-two million, four hundred fifty-two thousand, eight hundred fifty-six".