2168207051 has 4 divisors (see below), whose sum is σ = 2209116672. Its totient is φ = 2127297432.

The previous prime is 2168207039. The next prime is 2168207057. The reversal of 2168207051 is 1507028612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168207051 is a prime.

It is a super-2 number, since 2×2168207051² = 9402243632012233202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2168206999 and 2168207017.

It is not an unprimeable number, because it can be changed into a prime (2168207057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20454731 + ... + 20454836.

It is an arithmetic number, because the mean of its divisors is an integer number (552279168).

Almost surely, 2^2168207051 is an apocalyptic number.

2168207051 is a deficient number, since it is larger than the sum of its proper divisors (40909621).

2168207051 is an equidigital number, since it uses as much as digits as its factorization.

2168207051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40909620.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2168207051 is about 46564.0102547021. The cubic root of 2168207051 is about 1294.2959259156.

The spelling of 2168207051 in words is "two billion, one hundred sixty-eight million, two hundred seven thousand, fifty-one".