210028596081 has 4 divisors (see below), whose sum is σ = 280038128112. Its totient is φ = 140019064052.

The previous prime is 210028596077. The next prime is 210028596097. The reversal of 210028596081 is 180695820012.

It is a happy number.

210028596081 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210028596081 - 2² = 210028596077 is a prime.

It is a super-2 number, since 2×210028596081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210028496081) 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 3 ways as a sum of consecutive naturals, for example, 35004766011 + ... + 35004766016.

It is an arithmetic number, because the mean of its divisors is an integer number (70009532028).

Almost surely, 2^210028596081 is an apocalyptic number.

It is an amenable number.

210028596081 is a deficient number, since it is larger than the sum of its proper divisors (70009532031).

210028596081 is an equidigital number, since it uses as much as digits as its factorization.

210028596081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70009532030.

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 210028596081 in words is "two hundred ten billion, twenty-eight million, five hundred ninety-six thousand, eighty-one".