215452330256064 has 224 divisors, whose sum is σ = 622972220322816. Its totient is φ = 65173318778880.

The previous prime is 215452330256063. The next prime is 215452330256147. The reversal of 215452330256064 is 460652033254512.

It is a super-2 number, since 2×215452330256064² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (215452330256063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5423302569 + ... + 5423342295.

It is an arithmetic number, because the mean of its divisors is an integer number (2781125983584).

Almost surely, 2^{215452330256064} is an apocalyptic number.

215452330256064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215452330256064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311486110161408).

215452330256064 is an abundant number, since it is smaller than the sum of its proper divisors (407519890066752).

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

215452330256064 is a wasteful number, since it uses less digits than its factorization.

215452330256064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44223 (or 44213 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 215452330256064 in words is "two hundred fifteen trillion, four hundred fifty-two billion, three hundred thirty million, two hundred fifty-six thousand, sixty-four".