215315053324 has 48 divisors (see below), whose sum is σ = 456524328960. Its totient is φ = 86742524160.

The previous prime is 215315053243. The next prime is 215315053339. The reversal of 215315053324 is 423350513512.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 215315053324.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107157 + ... + 664915.

It is an arithmetic number, because the mean of its divisors is an integer number (9510923520).

Almost surely, 2^215315053324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215315053324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228262164480).

215315053324 is an abundant number, since it is smaller than the sum of its proper divisors (241209275636).

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

215315053324 is a wasteful number, since it uses less digits than its factorization.

215315053324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558598 (or 558596 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 215315053324 its reverse (423350513512), we get a palindrome (638665566836).

The spelling of 215315053324 in words is "two hundred fifteen billion, three hundred fifteen million, fifty-three thousand, three hundred twenty-four".