1129121791794 has 64 divisors (see below), whose sum is σ = 2641904265600. Its totient is φ = 356472477504.

The previous prime is 1129121791757. The next prime is 1129121791807. The reversal of 1129121791794 is 4971971219211.

1129121791794 is a `hidden beast` number, since 11 + 291 + 2 + 179 + 179 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1129121791794.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3878364 + ... + 4159320.

It is an arithmetic number, because the mean of its divisors is an integer number (41279754150).

Almost surely, 2^{1129121791794} is an apocalyptic number.

1129121791794 is an abundant number, since it is smaller than the sum of its proper divisors (1512782473806).

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

1129121791794 is a wasteful number, since it uses less digits than its factorization.

1129121791794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284904 (or 284898 counting only the distinct ones).

The product of its digits is 571536, while the sum is 54.

The spelling of 1129121791794 in words is "one trillion, one hundred twenty-nine billion, one hundred twenty-one million, seven hundred ninety-one thousand, seven hundred ninety-four".