1129856204511 has 20 divisors (see below), whose sum is σ = 1723720740192. Its totient is φ = 737211138048.

The previous prime is 1129856204467. The next prime is 1129856204527. The reversal of 1129856204511 is 1154026589211.

1129856204511 is a `hidden beast` number, since 1 + 1 + 2 + 9 + 8 + 5 + 620 + 4 + 5 + 11 = 666.

It is not a de Polignac number, because 1129856204511 - 2⁷ = 1129856204383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129856204531) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 148388130 + ... + 148395743.

Almost surely, 2^{1129856204511} is an apocalyptic number.

1129856204511 is a deficient number, since it is larger than the sum of its proper divisors (593864535681).

1129856204511 is an equidigital number, since it uses as much as digits as its factorization.

1129856204511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296783932 (or 296783923 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 1129856204511 in words is "one trillion, one hundred twenty-nine billion, eight hundred fifty-six million, two hundred four thousand, five hundred eleven".