11621602001 has 4 divisors (see below), whose sum is σ = 11626799412. Its totient is φ = 11616404592.

The previous prime is 11621601919. The next prime is 11621602007. The reversal of 11621602001 is 10020612611.

11621602001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10020612611 = 98927 ⋅101293.

It can be written as a sum of positive squares in 2 ways, for example, as 10064904976 + 1556697025 = 100324^2 + 39455^2 .

It is a cyclic number.

It is not a de Polignac number, because 11621602001 - 2¹⁸ = 11621339857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11621602007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2595350 + ... + 2599823.

It is an arithmetic number, because the mean of its divisors is an integer number (2906699853).

Almost surely, 2^11621602001 is an apocalyptic number.

It is an amenable number.

11621602001 is a deficient number, since it is larger than the sum of its proper divisors (5197411).

11621602001 is an equidigital number, since it uses as much as digits as its factorization.

11621602001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197410.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 11621602001 in words is "eleven billion, six hundred twenty-one million, six hundred two thousand, one".