215542354323 has 32 divisors (see below), whose sum is σ = 305203894272. Its totient is φ = 134838950400.

The previous prime is 215542354277. The next prime is 215542354327. The reversal of 215542354323 is 323453245512.

215542354323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215542354323 - 2¹² = 215542350227 is a prime.

It is a super-3 number, since 3×215542354323³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (215542354327) 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 31 ways as a sum of consecutive naturals, for example, 27338740 + ... + 27346622.

It is an arithmetic number, because the mean of its divisors is an integer number (9537621696).

Almost surely, 2^215542354323 is an apocalyptic number.

215542354323 is a deficient number, since it is larger than the sum of its proper divisors (89661539949).

215542354323 is a wasteful number, since it uses less digits than its factorization.

215542354323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9435.

The product of its digits is 432000, while the sum is 39.

Adding to 215542354323 its reverse (323453245512), we get a palindrome (538995599835).

The spelling of 215542354323 in words is "two hundred fifteen billion, five hundred forty-two million, three hundred fifty-four thousand, three hundred twenty-three".