215613646316512 has 48 divisors (see below), whose sum is σ = 424827358562880. Its totient is φ = 107721008275968.

The previous prime is 215613646316399. The next prime is 215613646316513.

215613646316512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×215613646316512² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215613646316512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215613646316513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284433289 + ... + 285190327.

It is an arithmetic number, because the mean of its divisors is an integer number (8850569970060).

Almost surely, 2^{215613646316512} is an apocalyptic number.

It is an amenable number.

215613646316512 is a deficient number, since it is larger than the sum of its proper divisors (209213712246368).

215613646316512 is a wasteful number, since it uses less digits than its factorization.

215613646316512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764123 (or 764115 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The spelling of 215613646316512 in words is "two hundred fifteen trillion, six hundred thirteen billion, six hundred forty-six million, three hundred sixteen thousand, five hundred twelve".