1131263804853 has 80 divisors (see below), whose sum is σ = 2098975500160. Its totient is φ = 591235749504.

The previous prime is 1131263804843. The next prime is 1131263804857. The reversal of 1131263804853 is 3584083621311.

It is a happy number.

1131263804853 is a `hidden beast` number, since 1 + 1 + 3 + 1 + 2 + 638 + 0 + 4 + 8 + 5 + 3 = 666.

It is not a de Polignac number, because 1131263804853 - 2⁶ = 1131263804789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131263804799 and 1131263804808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131263804857) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 99426 + ... + 1507452.

It is an arithmetic number, because the mean of its divisors is an integer number (26237193752).

Almost surely, 2^{1131263804853} is an apocalyptic number.

1131263804853 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1131263804853 is a deficient number, since it is larger than the sum of its proper divisors (967711695307).

1131263804853 is a wasteful number, since it uses less digits than its factorization.

1131263804853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408168 (or 1408159 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 1131263804853 in words is "one trillion, one hundred thirty-one billion, two hundred sixty-three million, eight hundred four thousand, eight hundred fifty-three".