5001721867 has 4 divisors (see below), whose sum is σ = 5009154520. Its totient is φ = 4994289216.

The previous prime is 5001721853. The next prime is 5001721889. The reversal of 5001721867 is 7681271005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7681271005 = 5 ⋅1536254201.

It is a cyclic number.

It is not a de Polignac number, because 5001721867 - 2¹¹ = 5001719819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5001721817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3715317 + ... + 3716662.

It is an arithmetic number, because the mean of its divisors is an integer number (1252288630).

Almost surely, 2^5001721867 is an apocalyptic number.

5001721867 is a deficient number, since it is larger than the sum of its proper divisors (7432653).

5001721867 is an equidigital number, since it uses as much as digits as its factorization.

5001721867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432652.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 5001721867 is about 70722.8525089309. The cubic root of 5001721867 is about 1710.1722142255.

The spelling of 5001721867 in words is "five billion, one million, seven hundred twenty-one thousand, eight hundred sixty-seven".