11505761045 has 8 divisors (see below), whose sum is σ = 13996049496. Its totient is φ = 9078518016.

The previous prime is 11505760993. The next prime is 11505761051. The reversal of 11505761045 is 54016750511.

It can be written as a sum of positive squares in 4 ways, for example, as 3595081681 + 7910679364 = 59959^2 + 88942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11505761045 - 2⁸ = 11505760789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11505760996 and 11505761014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15760952 + ... + 15761681.

It is an arithmetic number, because the mean of its divisors is an integer number (1749506187).

Almost surely, 2^11505761045 is an apocalyptic number.

It is an amenable number.

11505761045 is a deficient number, since it is larger than the sum of its proper divisors (2490288451).

11505761045 is an equidigital number, since it uses as much as digits as its factorization.

11505761045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31522711.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 11505761045 in words is "eleven billion, five hundred five million, seven hundred sixty-one thousand, forty-five".