215135451151 has 4 divisors (see below), whose sum is σ = 217146062952. Its totient is φ = 213124839352.

The previous prime is 215135451127. The next prime is 215135451169. The reversal of 215135451151 is 151154531512.

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 215135451151 - 2⁷ = 215135451023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215135451851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005305740 + ... + 1005305953.

It is an arithmetic number, because the mean of its divisors is an integer number (54286515738).

Almost surely, 2^215135451151 is an apocalyptic number.

215135451151 is a deficient number, since it is larger than the sum of its proper divisors (2010611801).

215135451151 is a wasteful number, since it uses less digits than its factorization.

215135451151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010611800.

The product of its digits is 15000, while the sum is 34.

Adding to 215135451151 its reverse (151154531512), we get a palindrome (366289982663).

The spelling of 215135451151 in words is "two hundred fifteen billion, one hundred thirty-five million, four hundred fifty-one thousand, one hundred fifty-one".