210075720081 has 16 divisors (see below), whose sum is σ = 285148868928. Its totient is φ = 137548569600.

The previous prime is 210075720077. The next prime is 210075720161. The reversal of 210075720081 is 180027570012.

210075720081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210075720081 - 2² = 210075720077 is a prime.

It is a super-2 number, since 2×210075720081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210075720181) 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 15 ways as a sum of consecutive naturals, for example, 2717260 + ... + 2793501.

It is an arithmetic number, because the mean of its divisors is an integer number (17821804308).

Almost surely, 2^210075720081 is an apocalyptic number.

It is an amenable number.

210075720081 is a deficient number, since it is larger than the sum of its proper divisors (75073148847).

210075720081 is a wasteful number, since it uses less digits than its factorization.

210075720081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510992.

The product of its (nonzero) digits is 7840, while the sum is 33.

The spelling of 210075720081 in words is "two hundred ten billion, seventy-five million, seven hundred twenty thousand, eighty-one".