1129423263450 has 24 divisors (see below), whose sum is σ = 2800969693728. Its totient is φ = 301179536880.

The previous prime is 1129423263431. The next prime is 1129423263491. The reversal of 1129423263450 is 543623249211.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3764744062 + ... + 3764744361.

It is an arithmetic number, because the mean of its divisors is an integer number (116707070572).

Almost surely, 2^{1129423263450} is an apocalyptic number.

1129423263450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129423263450 is an abundant number, since it is smaller than the sum of its proper divisors (1671546430278).

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

1129423263450 is a wasteful number, since it uses less digits than its factorization.

1129423263450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7529488438 (or 7529488433 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1129423263450 in words is "one trillion, one hundred twenty-nine billion, four hundred twenty-three million, two hundred sixty-three thousand, four hundred fifty".