215315801593 has 8 divisors (see below), whose sum is σ = 230749720128. Its totient is φ = 200387913264.

The previous prime is 215315801587. The next prime is 215315801621. The reversal of 215315801593 is 395108513512.

215315801593 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-215315801593 is a prime.

It is a super-2 number, since 2×215315801593² (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 (215315801513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126506671 + ... + 126508372.

It is an arithmetic number, because the mean of its divisors is an integer number (28843715016).

Almost surely, 2^215315801593 is an apocalyptic number.

215315801593 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

215315801593 is a deficient number, since it is larger than the sum of its proper divisors (15433918535).

215315801593 is a wasteful number, since it uses less digits than its factorization.

215315801593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253015103.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 215315801593 in words is "two hundred fifteen billion, three hundred fifteen million, eight hundred one thousand, five hundred ninety-three".