28717157302873 has 16 divisors (see below), whose sum is σ = 31068971251920. Its totient is φ = 26385801410304.

The previous prime is 28717157302871. The next prime is 28717157302913. The reversal of 28717157302873 is 37820375171782.

It can be written as a sum of positive squares in 8 ways, for example, as 3766363066944 + 24950794235929 = 1940712^2 + 4995077^2 .

It is a cyclic number.

It is not a de Polignac number, because 28717157302873 - 2¹ = 28717157302871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28717157302871) 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, 10744815 + ... + 13148587.

It is an arithmetic number, because the mean of its divisors is an integer number (1941810703245).

Almost surely, 2^{28717157302873} is an apocalyptic number.

It is an amenable number.

28717157302873 is a deficient number, since it is larger than the sum of its proper divisors (2351813949047).

28717157302873 is a wasteful number, since it uses less digits than its factorization.

28717157302873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408028.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 28717157302873 in words is "twenty-eight trillion, seven hundred seventeen billion, one hundred fifty-seven million, three hundred two thousand, eight hundred seventy-three".