11261571601 has 8 divisors (see below), whose sum is σ = 12873422144. Its totient is φ = 9650484720.

The previous prime is 11261571553. The next prime is 11261571617. The reversal of 11261571601 is 10617516211.

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 11261571601 - 2²⁵ = 11228017169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11261571691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158955 + ... + 218608.

It is an arithmetic number, because the mean of its divisors is an integer number (1609177768).

Almost surely, 2^11261571601 is an apocalyptic number.

It is an amenable number.

11261571601 is a deficient number, since it is larger than the sum of its proper divisors (1611850543).

11261571601 is an equidigital number, since it uses as much as digits as its factorization.

11261571601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381831.

The product of its (nonzero) digits is 2520, while the sum is 31.

The spelling of 11261571601 in words is "eleven billion, two hundred sixty-one million, five hundred seventy-one thousand, six hundred one".