2172647799 has 96 divisors (see below), whose sum is σ = 3870746880. Its totient is φ = 1200225600.

The previous prime is 2172647779. The next prime is 2172647819. The reversal of 2172647799 is 9977462712.

It is an interprime number because it is at equal distance from previous prime (2172647779) and next prime (2172647819).

It is not a de Polignac number, because 2172647799 - 2⁵ = 2172647767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172647779) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10296804 + ... + 10297014.

It is an arithmetic number, because the mean of its divisors is an integer number (40320280).

Almost surely, 2^2172647799 is an apocalyptic number.

2172647799 is a deficient number, since it is larger than the sum of its proper divisors (1698099081).

2172647799 is a wasteful number, since it uses less digits than its factorization.

2172647799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458 (or 445 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 2172647799 is about 46611.6702017853. The cubic root of 2172647799 is about 1295.1789477572.

The spelling of 2172647799 in words is "two billion, one hundred seventy-two million, six hundred forty-seven thousand, seven hundred ninety-nine".