210151320666 has 64 divisors (see below), whose sum is σ = 506862489600. Its totient is φ = 56787325056.

The previous prime is 210151320649. The next prime is 210151320671. The reversal of 210151320666 is 666023151012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1136206 + ... + 1308153.

It is an arithmetic number, because the mean of its divisors is an integer number (7919726400).

Almost surely, 2^210151320666 is an apocalyptic number.

210151320666 is an abundant number, since it is smaller than the sum of its proper divisors (296711168934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210151320666 is a wasteful number, since it uses less digits than its factorization.

210151320666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444483.

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 210151320666 its reverse (666023151012), we get a palindrome (876174471678).

The spelling of 210151320666 in words is "two hundred ten billion, one hundred fifty-one million, three hundred twenty thousand, six hundred sixty-six".