11813083505 has 8 divisors (see below), whose sum is σ = 15009565032. Its totient is φ = 8894556928.

The previous prime is 11813083489. The next prime is 11813083507. The reversal of 11813083505 is 50538031811.

It can be written as a sum of positive squares in 4 ways, for example, as 5193796624 + 6619286881 = 72068^2 + 81359^2 .

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 11813083505 - 2⁴ = 11813083489 is a prime.

It is a super-2 number, since 2×11813083505² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11813083507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69488642 + ... + 69488811.

It is an arithmetic number, because the mean of its divisors is an integer number (1876195629).

Almost surely, 2^11813083505 is an apocalyptic number.

It is an amenable number.

11813083505 is a deficient number, since it is larger than the sum of its proper divisors (3196481527).

11813083505 is a wasteful number, since it uses less digits than its factorization.

11813083505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138977475.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 11813083505 in words is "eleven billion, eight hundred thirteen million, eighty-three thousand, five hundred five".