215440005145352 has 256 divisors, whose sum is σ = 447309904554240. Its totient is φ = 96675245162496.

The previous prime is 215440005145249. The next prime is 215440005145429. The reversal of 215440005145352 is 253541500044512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115393681523 + ... + 115393683389.

It is an arithmetic number, because the mean of its divisors is an integer number (1747304314665).

Almost surely, 2^{215440005145352} 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 215440005145352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223654952277120).

215440005145352 is an abundant number, since it is smaller than the sum of its proper divisors (231869899408888).

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

215440005145352 is a wasteful number, since it uses less digits than its factorization.

215440005145352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 215440005145352 its reverse (253541500044512), we get a palindrome (468981505189864).

The spelling of 215440005145352 in words is "two hundred fifteen trillion, four hundred forty billion, five million, one hundred forty-five thousand, three hundred fifty-two".