215473939043328 has 1408 divisors, whose sum is σ = 806089174133760. Its totient is φ = 55450439516160.

The previous prime is 215473939043327. The next prime is 215473939043339. The reversal of 215473939043328 is 823340939374512.

215473939043328 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 7 + 3 + 93 + 90 + 433 + 28 = 666.

It is a super-2 number, since 2×215473939043328² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215473939043323) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7425768276 + ... + 7425797292.

It is an arithmetic number, because the mean of its divisors is an integer number (572506515720).

Almost surely, 2^{215473939043328} is an apocalyptic number.

215473939043328 is a gapful number since it is divisible by the number (28) 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 215473939043328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403044587066880).

215473939043328 is an abundant number, since it is smaller than the sum of its proper divisors (590615235090432).

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

215473939043328 is a wasteful number, since it uses less digits than its factorization.

215473939043328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29168 (or 29144 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 63.

The spelling of 215473939043328 in words is "two hundred fifteen trillion, four hundred seventy-three billion, nine hundred thirty-nine million, forty-three thousand, three hundred twenty-eight".