8072873021 has 4 divisors (see below), whose sum is σ = 8076050112. Its totient is φ = 8069695932.

The previous prime is 8072872979. The next prime is 8072873023. The reversal of 8072873021 is 1203782708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8072873021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8072873023) 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, 1584731 + ... + 1589816.

It is an arithmetic number, because the mean of its divisors is an integer number (2019012528).

Almost surely, 2^8072873021 is an apocalyptic number.

It is an amenable number.

8072873021 is a deficient number, since it is larger than the sum of its proper divisors (3177091).

8072873021 is a wasteful number, since it uses less digits than its factorization.

8072873021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177090.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 8072873021 is about 89849.1681708851. The cubic root of 8072873021 is about 2006.0544053439.

The spelling of 8072873021 in words is "eight billion, seventy-two million, eight hundred seventy-three thousand, twenty-one".