210681046601 has 2 divisors, whose sum is σ = 210681046602. Its totient is φ = 210681046600.

The previous prime is 210681046577. The next prime is 210681046727. The reversal of 210681046601 is 106640186012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196639033600 + 14042013001 = 443440^2 + 118499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210681046601 is a prime.

It is not a weakly prime, because it can be changed into another prime (210681042601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105340523300 + 105340523301.

It is an arithmetic number, because the mean of its divisors is an integer number (105340523301).

Almost surely, 2^210681046601 is an apocalyptic number.

It is an amenable number.

210681046601 is a deficient number, since it is larger than the sum of its proper divisors (1).

210681046601 is an equidigital number, since it uses as much as digits as its factorization.

210681046601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 210681046601 in words is "two hundred ten billion, six hundred eighty-one million, forty-six thousand, six hundred one".