215885736073 has 16 divisors (see below), whose sum is σ = 257486699520. Its totient is φ = 176976865296.

The previous prime is 215885736071. The next prime is 215885736109. The reversal of 215885736073 is 370637588512.

It is not a de Polignac number, because 215885736073 - 2¹ = 215885736071 is a prime.

It is a super-2 number, since 2×215885736073² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215885736071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1241686 + ... + 1404832.

It is an arithmetic number, because the mean of its divisors is an integer number (16092918720).

Almost surely, 2^215885736073 is an apocalyptic number.

215885736073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

215885736073 is a deficient number, since it is larger than the sum of its proper divisors (41600963447).

215885736073 is a wasteful number, since it uses less digits than its factorization.

215885736073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171396.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 215885736073 in words is "two hundred fifteen billion, eight hundred eighty-five million, seven hundred thirty-six thousand, seventy-three".