4011955601 has 4 divisors (see below), whose sum is σ = 4016166372. Its totient is φ = 4007744832.

The previous prime is 4011955561. The next prime is 4011955603. The reversal of 4011955601 is 1065591104.

4011955601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 63340²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1670847376 + 2341108225 = 40876^2 + 48385^2 .

It is a cyclic number.

It is not a de Polignac number, because 4011955601 - 2¹⁰ = 4011954577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4011955603) 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, 2103956 + ... + 2105861.

It is an arithmetic number, because the mean of its divisors is an integer number (1004041593).

Almost surely, 2^4011955601 is an apocalyptic number.

It is an amenable number.

4011955601 is a deficient number, since it is larger than the sum of its proper divisors (4210771).

4011955601 is an equidigital number, since it uses as much as digits as its factorization.

4011955601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210770.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 4011955601 is about 63340.0000078939. Note that the first 5 decimals coincide. The cubic root of 4011955601 is about 1588.9810067035.

The spelling of 4011955601 in words is "four billion, eleven million, nine hundred fifty-five thousand, six hundred one".