215530001044 has 12 divisors (see below), whose sum is σ = 377918522100. Its totient is φ = 107553280448.

The previous prime is 215530001039. The next prime is 215530001117. The reversal of 215530001044 is 440100035512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 127457568144 + 88072432900 = 357012^2 + 296770^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52927729 + ... + 52931800.

It is an arithmetic number, because the mean of its divisors is an integer number (31493210175).

Almost surely, 2^215530001044 is an apocalyptic number.

It is an amenable number.

215530001044 is a deficient number, since it is larger than the sum of its proper divisors (162388521056).

215530001044 is a wasteful number, since it uses less digits than its factorization.

215530001044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105860042 (or 105860040 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 215530001044 its reverse (440100035512), we get a palindrome (655630036556).

The spelling of 215530001044 in words is "two hundred fifteen billion, five hundred thirty million, one thousand, forty-four".