8215973502993 has 48 divisors (see below), whose sum is σ = 12291899227920. Its totient is φ = 5284906099200.

The previous prime is 8215973502991. The next prime is 8215973503021. The reversal of 8215973502993 is 3992053795128.

8215973502993 is a `hidden beast` number, since 8 + 2 + 1 + 59 + 73 + 502 + 9 + 9 + 3 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1044541232784 + 7171432270209 = 1022028^2 + 2677953^2 .

It is not a de Polignac number, because 8215973502993 - 2¹ = 8215973502991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8215973502993.

It is not an unprimeable number, because it can be changed into a prime (8215973502991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 180989743 + ... + 181035131.

It is an arithmetic number, because the mean of its divisors is an integer number (256081233915).

Almost surely, 2^{8215973502993} is an apocalyptic number.

It is an amenable number.

8215973502993 is a deficient number, since it is larger than the sum of its proper divisors (4075925724927).

8215973502993 is a wasteful number, since it uses less digits than its factorization.

8215973502993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51730 (or 51727 counting only the distinct ones).

The product of its (nonzero) digits is 36741600, while the sum is 63.

The spelling of 8215973502993 in words is "eight trillion, two hundred fifteen billion, nine hundred seventy-three million, five hundred two thousand, nine hundred ninety-three".