11342143505 has 32 divisors (see below), whose sum is σ = 16977523968. Its totient is φ = 7066886400.

The previous prime is 11342143493. The next prime is 11342143511. The reversal of 11342143505 is 50534124311.

It is a de Polignac number, because none of the positive numbers 2^k-11342143505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 910499 + ... + 922871.

It is an arithmetic number, because the mean of its divisors is an integer number (530547624).

Almost surely, 2^11342143505 is an apocalyptic number.

It is an amenable number.

11342143505 is a deficient number, since it is larger than the sum of its proper divisors (5635380463).

11342143505 is a wasteful number, since it uses less digits than its factorization.

11342143505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14777.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 11342143505 its reverse (50534124311), we get a palindrome (61876267816).

The spelling of 11342143505 in words is "eleven billion, three hundred forty-two million, one hundred forty-three thousand, five hundred five".