2116170651 has 16 divisors (see below), whose sum is σ = 3241016064. Its totient is φ = 1203099744.

The previous prime is 2116170649. The next prime is 2116170743. The reversal of 2116170651 is 1560716112.

It is not a de Polignac number, because 2116170651 - 2¹ = 2116170649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116170601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251625 + ... + 259898.

It is an arithmetic number, because the mean of its divisors is an integer number (202563504).

Almost surely, 2^2116170651 is an apocalyptic number.

2116170651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2116170651 is a deficient number, since it is larger than the sum of its proper divisors (1124845413).

2116170651 is a wasteful number, since it uses less digits than its factorization.

2116170651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511730.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 2116170651 is about 46001.8548647769. The cubic root of 2116170651 is about 1283.8577162287.

Adding to 2116170651 its reverse (1560716112), we get a palindrome (3676886763).

The spelling of 2116170651 in words is "two billion, one hundred sixteen million, one hundred seventy thousand, six hundred fifty-one".