215503430152 has 8 divisors (see below), whose sum is σ = 404068931550. Its totient is φ = 107751715072.

The previous prime is 215503430123. The next prime is 215503430167. The reversal of 215503430152 is 251034305512.

It can be written as a sum of positive squares in only one way, i.e., 181583367876 + 33920062276 = 426126^2 + 184174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13468964377 + ... + 13468964392.

Almost surely, 2^215503430152 is an apocalyptic number.

It is an amenable number.

215503430152 is a deficient number, since it is larger than the sum of its proper divisors (188565501398).

215503430152 is a wasteful number, since it uses less digits than its factorization.

215503430152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26937928775 (or 26937928771 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 215503430152 its reverse (251034305512), we get a palindrome (466537735664).

The spelling of 215503430152 in words is "two hundred fifteen billion, five hundred three million, four hundred thirty thousand, one hundred fifty-two".