8021540673 has 16 divisors (see below), whose sum is σ = 11888858560. Its totient is φ = 5345401248.

The previous prime is 8021540663. The next prime is 8021540699. The reversal of 8021540673 is 3760451208.

It is not a de Polignac number, because 8021540673 - 2¹⁰ = 8021539649 is a prime.

It is a super-2 number, since 2×8021540673² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8021540663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1686 + ... + 126672.

It is an arithmetic number, because the mean of its divisors is an integer number (743053660).

Almost surely, 2^8021540673 is an apocalyptic number.

It is an amenable number.

8021540673 is a deficient number, since it is larger than the sum of its proper divisors (3867317887).

8021540673 is a wasteful number, since it uses less digits than its factorization.

8021540673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127373 (or 127367 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 8021540673 is about 89563.0541741404. The cubic root of 8021540673 is about 2001.7934473759.

The spelling of 8021540673 in words is "eight billion, twenty-one million, five hundred forty thousand, six hundred seventy-three".