1172478875256 has 384 divisors, whose sum is σ = 3630757478400. Its totient is φ = 350241615360.

The previous prime is 1172478875219. The next prime is 1172478875263. The reversal of 1172478875256 is 6525788742711.

1172478875256 is a `hidden beast` number, since 1 + 1 + 7 + 24 + 7 + 8 + 87 + 525 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1172478875193 and 1172478875202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 217889686 + ... + 217895066.

It is an arithmetic number, because the mean of its divisors is an integer number (9455097600).

Almost surely, 2^{1172478875256} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1172478875256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815378739200).

1172478875256 is an abundant number, since it is smaller than the sum of its proper divisors (2458278603144).

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

1172478875256 is a wasteful number, since it uses less digits than its factorization.

1172478875256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5596 (or 5573 counting only the distinct ones).

The product of its digits is 52684800, while the sum is 63.

The spelling of 1172478875256 in words is "one trillion, one hundred seventy-two billion, four hundred seventy-eight million, eight hundred seventy-five thousand, two hundred fifty-six".