215889280320 has 168 divisors, whose sum is σ = 797358592224. Its totient is φ = 49346110464.

The previous prime is 215889280297. The next prime is 215889280333. The reversal of 215889280320 is 23082988512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

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

It is a self number, because there is not a number n which added to its sum of digits gives 215889280320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2247702 + ... + 2341781.

Almost surely, 2^215889280320 is an apocalyptic number.

215889280320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215889280320 is an abundant number, since it is smaller than the sum of its proper divisors (581469311904).

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

215889280320 is a wasteful number, since it uses less digits than its factorization.

215889280320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589517 (or 4589500 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 215889280320 in words is "two hundred fifteen billion, eight hundred eighty-nine million, two hundred eighty thousand, three hundred twenty".