211710520670 has 32 divisors (see below), whose sum is σ = 415748700000. Its totient is φ = 76980787840.

The previous prime is 211710520657. The next prime is 211710520733. The reversal of 211710520670 is 76025017112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2011064 + ... + 2113716.

It is an arithmetic number, because the mean of its divisors is an integer number (12992146875).

Almost surely, 2^211710520670 is an apocalyptic number.

211710520670 is a deficient number, since it is larger than the sum of its proper divisors (204038179330).

211710520670 is a wasteful number, since it uses less digits than its factorization.

211710520670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121420.

The product of its (nonzero) digits is 5880, while the sum is 32.

Adding to 211710520670 its reverse (76025017112), we get a palindrome (287735537782).

The spelling of 211710520670 in words is "two hundred eleven billion, seven hundred ten million, five hundred twenty thousand, six hundred seventy".