215445113145 has 32 divisors (see below), whose sum is σ = 383094268800. Its totient is φ = 114879840192.

The previous prime is 215445113089. The next prime is 215445113183. The reversal of 215445113145 is 541311544512.

215445113145 is a `hidden beast` number, since 2 + 1 + 54 + 451 + 13 + 145 = 666.

It is not a de Polignac number, because 215445113145 - 2¹² = 215445109049 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 483966 + ... + 815544.

It is an arithmetic number, because the mean of its divisors is an integer number (11971695900).

Almost surely, 2^215445113145 is an apocalyptic number.

It is an amenable number.

215445113145 is a deficient number, since it is larger than the sum of its proper divisors (167649155655).

215445113145 is a wasteful number, since it uses less digits than its factorization.

215445113145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336406 (or 336400 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 215445113145 its reverse (541311544512), we get a palindrome (756756657657).

The spelling of 215445113145 in words is "two hundred fifteen billion, four hundred forty-five million, one hundred thirteen thousand, one hundred forty-five".