1129856204512 has 72 divisors (see below), whose sum is σ = 2657506995864. Its totient is φ = 471136925952.

The previous prime is 1129856204467. The next prime is 1129856204527. The reversal of 1129856204512 is 2154026589211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9679438 + ... + 9795469.

It is an arithmetic number, because the mean of its divisors is an integer number (36909819387).

Almost surely, 2^{1129856204512} is an apocalyptic number.

It is an amenable number.

1129856204512 is an abundant number, since it is smaller than the sum of its proper divisors (1527650791352).

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

1129856204512 is a wasteful number, since it uses less digits than its factorization.

1129856204512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19474968 (or 19474953 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 1129856204512 in words is "one trillion, one hundred twenty-nine billion, eight hundred fifty-six million, two hundred four thousand, five hundred twelve".