215503320052 has 12 divisors (see below), whose sum is σ = 377807889060. Its totient is φ = 107558208896.

The previous prime is 215503320007. The next prime is 215503320073. The reversal of 215503320052 is 250023305512.

It can be written as a sum of positive squares in 2 ways, for example, as 5862046096 + 209641273956 = 76564^2 + 457866^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215503320052.

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, 48360277 + ... + 48364732.

It is an arithmetic number, because the mean of its divisors is an integer number (31483990755).

Almost surely, 2^215503320052 is an apocalyptic number.

It is an amenable number.

215503320052 is a deficient number, since it is larger than the sum of its proper divisors (162304569008).

215503320052 is a wasteful number, since it uses less digits than its factorization.

215503320052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96725570 (or 96725568 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 215503320052 its reverse (250023305512), we get a palindrome (465526625564).

The spelling of 215503320052 in words is "two hundred fifteen billion, five hundred three million, three hundred twenty thousand, fifty-two".