11601051505 has 8 divisors (see below), whose sum is σ = 13923168552. Its totient is φ = 9279570048.

The previous prime is 11601051479. The next prime is 11601051523. The reversal of 11601051505 is 50515010611.

It can be written as a sum of positive squares in 4 ways, for example, as 8092621681 + 3508429824 = 89959^2 + 59232^2 .

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 11601051505 - 2²³ = 11592662897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11601051505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117772 + ... + 192541.

It is an arithmetic number, because the mean of its divisors is an integer number (1740396069).

Almost surely, 2^11601051505 is an apocalyptic number.

It is an amenable number.

11601051505 is a deficient number, since it is larger than the sum of its proper divisors (2322117047).

11601051505 is an equidigital number, since it uses as much as digits as its factorization.

11601051505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317795.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 11601051505 in words is "eleven billion, six hundred one million, fifty-one thousand, five hundred five".