215448845392 has 80 divisors (see below), whose sum is σ = 475986284928. Its totient is φ = 93514403840.

The previous prime is 215448845387. The next prime is 215448845393. The reversal of 215448845392 is 293548844512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215448845393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2355588 + ... + 2445340.

Almost surely, 2^215448845392 is an apocalyptic number.

215448845392 is a gapful number since it is divisible by the number (22) 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 215448845392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237993142464).

215448845392 is an abundant number, since it is smaller than the sum of its proper divisors (260537439536).

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

215448845392 is a wasteful number, since it uses less digits than its factorization.

215448845392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90388 (or 90382 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 55.

The spelling of 215448845392 in words is "two hundred fifteen billion, four hundred forty-eight million, eight hundred forty-five thousand, three hundred ninety-two".