1172878406253 has 6 divisors (see below), whose sum is σ = 1694157697934. Its totient is φ = 781918937496.

The previous prime is 1172878406243. The next prime is 1172878406261. The reversal of 1172878406253 is 3526048782711.

1172878406253 is a `hidden beast` number, since 1 + 1 + 7 + 2 + 8 + 7 + 8 + 4 + 0 + 625 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 746734483044 + 426143923209 = 864138^2 + 652797^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1172878406253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1172878406253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172878406213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65159911450 + ... + 65159911467.

Almost surely, 2^{1172878406253} is an apocalyptic number.

It is an amenable number.

1172878406253 is a deficient number, since it is larger than the sum of its proper divisors (521279291681).

1172878406253 is a wasteful number, since it uses less digits than its factorization.

1172878406253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130319822923 (or 130319822920 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 1172878406253 in words is "one trillion, one hundred seventy-two billion, eight hundred seventy-eight million, four hundred six thousand, two hundred fifty-three".