1272425557896 has 96 divisors (see below), whose sum is σ = 3469185720000. Its totient is φ = 421316272512.

The previous prime is 1272425557831. The next prime is 1272425557939. The reversal of 1272425557896 is 6987555242721.

It is a happy number.

1272425557896 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 4 + 2 + 55 + 578 + 9 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6512395 + ... + 6704933.

It is an arithmetic number, because the mean of its divisors is an integer number (36137351250).

Almost surely, 2^{1272425557896} is an apocalyptic number.

It is an amenable number.

1272425557896 is an abundant number, since it is smaller than the sum of its proper divisors (2196760162104).

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

1272425557896 is a wasteful number, since it uses less digits than its factorization.

1272425557896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193163 (or 193156 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 63.

The spelling of 1272425557896 in words is "one trillion, two hundred seventy-two billion, four hundred twenty-five million, five hundred fifty-seven thousand, eight hundred ninety-six".