215449606848 has 336 divisors, whose sum is σ = 709491494400. Its totient is φ = 57358264320.

The previous prime is 215449606843. The next prime is 215449606849. The reversal of 215449606848 is 848606944512.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (215449606843) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10893993 + ... + 10913751.

Almost surely, 2^215449606848 is an apocalyptic number.

215449606848 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 215449606848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354745747200).

215449606848 is an abundant number, since it is smaller than the sum of its proper divisors (494041887552).

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

215449606848 is a wasteful number, since it uses less digits than its factorization.

215449606848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19868 (or 19851 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 215449606848 in words is "two hundred fifteen billion, four hundred forty-nine million, six hundred six thousand, eight hundred forty-eight".