11042351505 has 24 divisors (see below), whose sum is σ = 20147449920. Its totient is φ = 5579292960.

The previous prime is 11042351501. The next prime is 11042351531. The reversal of 11042351505 is 50515324011.

11042351505 is a `hidden beast` number, since 1 + 104 + 2 + 3 + 51 + 505 = 666.

It is not a de Polignac number, because 11042351505 - 2² = 11042351501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11042351501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6456661 + ... + 6458370.

It is an arithmetic number, because the mean of its divisors is an integer number (839477080).

Almost surely, 2^11042351505 is an apocalyptic number.

11042351505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11042351505 is a deficient number, since it is larger than the sum of its proper divisors (9105098415).

11042351505 is a wasteful number, since it uses less digits than its factorization.

11042351505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915061 (or 12915058 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 11042351505 its reverse (50515324011), we get a palindrome (61557675516).

The spelling of 11042351505 in words is "eleven billion, forty-two million, three hundred fifty-one thousand, five hundred five".