215123410452 has 24 divisors (see below), whose sum is σ = 501965212000. Its totient is φ = 71706290976.

The previous prime is 215123410451. The next prime is 215123410501. The reversal of 215123410452 is 254014321512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215123410451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505674 + ... + 828222.

Almost surely, 2^215123410452 is an apocalyptic number.

It is an amenable number.

215123410452 is an abundant number, since it is smaller than the sum of its proper divisors (286841801548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215123410452 is a wasteful number, since it uses less digits than its factorization.

215123410452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378135 (or 378133 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 215123410452 its reverse (254014321512), we get a palindrome (469137731964).

The spelling of 215123410452 in words is "two hundred fifteen billion, one hundred twenty-three million, four hundred ten thousand, four hundred fifty-two".