215443430151 has 4 divisors (see below), whose sum is σ = 287257906872. Its totient is φ = 143628953432.

The previous prime is 215443430149. The next prime is 215443430159. The reversal of 215443430151 is 151034344512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 215443430151 - 2¹ = 215443430149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215443430159) 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, 35907238356 + ... + 35907238361.

It is an arithmetic number, because the mean of its divisors is an integer number (71814476718).

Almost surely, 2^215443430151 is an apocalyptic number.

215443430151 is a deficient number, since it is larger than the sum of its proper divisors (71814476721).

215443430151 is an equidigital number, since it uses as much as digits as its factorization.

215443430151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71814476720.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 215443430151 its reverse (151034344512), we get a palindrome (366477774663).

The spelling of 215443430151 in words is "two hundred fifteen billion, four hundred forty-three million, four hundred thirty thousand, one hundred fifty-one".