2172566713 has 2 divisors, whose sum is σ = 2172566714. Its totient is φ = 2172566712.

The previous prime is 2172566699. The next prime is 2172566717. The reversal of 2172566713 is 3176652712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2148044409 + 24522304 = 46347^2 + 4952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172566713 is a prime.

It is a super-2 number, since 2×2172566713² = 9440092244871248738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2172566717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086283356 + 1086283357.

It is an arithmetic number, because the mean of its divisors is an integer number (1086283357).

Almost surely, 2^2172566713 is an apocalyptic number.

It is an amenable number.

2172566713 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172566713 is an equidigital number, since it uses as much as digits as its factorization.

2172566713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 40.

The square root of 2172566713 is about 46610.8003900384. The cubic root of 2172566713 is about 1295.1628349774.

The spelling of 2172566713 in words is "two billion, one hundred seventy-two million, five hundred sixty-six thousand, seven hundred thirteen".