11726045505 has 12 divisors (see below), whose sum is σ = 20325145620. Its totient is φ = 6253890912.

The previous prime is 11726045503. The next prime is 11726045537. The reversal of 11726045505 is 50554062711.

It can be written as a sum of positive squares in 2 ways, for example, as 2148878736 + 9577166769 = 46356^2 + 97863^2 .

It is not a de Polignac number, because 11726045505 - 2¹ = 11726045503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11726045505.

It is not an unprimeable number, because it can be changed into a prime (11726045503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130289350 + ... + 130289439.

It is an arithmetic number, because the mean of its divisors is an integer number (1693762135).

Almost surely, 2^11726045505 is an apocalyptic number.

11726045505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11726045505 is a deficient number, since it is larger than the sum of its proper divisors (8599100115).

11726045505 is a wasteful number, since it uses less digits than its factorization.

11726045505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260578800 (or 260578797 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The spelling of 11726045505 in words is "eleven billion, seven hundred twenty-six million, forty-five thousand, five hundred five".