1129423263451 has 4 divisors (see below), whose sum is σ = 1290769443952. Its totient is φ = 968077082952.

The previous prime is 1129423263431. The next prime is 1129423263491. The reversal of 1129423263451 is 1543623249211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1129423263451 - 2²⁹ = 1128886392539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129423263398 and 1129423263407.

It is not an unprimeable number, because it can be changed into a prime (1129423263421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80673090240 + ... + 80673090253.

It is an arithmetic number, because the mean of its divisors is an integer number (322692360988).

Almost surely, 2^{1129423263451} is an apocalyptic number.

1129423263451 is a deficient number, since it is larger than the sum of its proper divisors (161346180501).

1129423263451 is an equidigital number, since it uses as much as digits as its factorization.

1129423263451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161346180500.

The product of its digits is 311040, while the sum is 43.

The spelling of 1129423263451 in words is "one trillion, one hundred twenty-nine billion, four hundred twenty-three million, two hundred sixty-three thousand, four hundred fifty-one".