11601571705 has 8 divisors (see below), whose sum is σ = 13922527752. Its totient is φ = 9280829568.

The previous prime is 11601571693. The next prime is 11601571711. The reversal of 11601571705 is 50717510611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2772338409 + 8829233296 = 52653^2 + 93964^2 .

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 11601571705 - 2¹⁵ = 11601538937 is a prime.

It is a Duffinian 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, 112917 + ... + 189613.

It is an arithmetic number, because the mean of its divisors is an integer number (1740315969).

Almost surely, 2^11601571705 is an apocalyptic number.

It is an amenable number.

11601571705 is a deficient number, since it is larger than the sum of its proper divisors (2320956047).

11601571705 is an equidigital number, since it uses as much as digits as its factorization.

11601571705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106955.

The product of its (nonzero) digits is 7350, while the sum is 34.

The spelling of 11601571705 in words is "eleven billion, six hundred one million, five hundred seventy-one thousand, seven hundred five".