215350342401 has 4 divisors (see below), whose sum is σ = 287133789872. Its totient is φ = 143566894932.

The previous prime is 215350342399. The next prime is 215350342411. The reversal of 215350342401 is 104243053512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 215350342401 - 2¹ = 215350342399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215350342411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35891723731 + ... + 35891723736.

It is an arithmetic number, because the mean of its divisors is an integer number (71783447468).

Almost surely, 2^215350342401 is an apocalyptic number.

It is an amenable number.

215350342401 is a deficient number, since it is larger than the sum of its proper divisors (71783447471).

215350342401 is an equidigital number, since it uses as much as digits as its factorization.

215350342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71783447470.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 215350342401 its reverse (104243053512), we get a palindrome (319593395913).

The spelling of 215350342401 in words is "two hundred fifteen billion, three hundred fifty million, three hundred forty-two thousand, four hundred one".