11958823601 has 4 divisors (see below), whose sum is σ = 11959909104. Its totient is φ = 11957738100.

The previous prime is 11958823529. The next prime is 11958823603. The reversal of 11958823601 is 10632885911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10632885911 = 2179 ⋅4879709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11958823601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11958823603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526055 + ... + 548316.

It is an arithmetic number, because the mean of its divisors is an integer number (2989977276).

Almost surely, 2^11958823601 is an apocalyptic number.

It is an amenable number.

11958823601 is a deficient number, since it is larger than the sum of its proper divisors (1085503).

11958823601 is a wasteful number, since it uses less digits than its factorization.

11958823601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085502.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 11958823601 in words is "eleven billion, nine hundred fifty-eight million, eight hundred twenty-three thousand, six hundred one".