215397118480 has 80 divisors (see below), whose sum is σ = 507452699520. Its totient is φ = 85019940864.

The previous prime is 215397118471. The next prime is 215397118499. The reversal of 215397118480 is 84811793512.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2285736 + ... + 2378104.

It is an arithmetic number, because the mean of its divisors is an integer number (6343158744).

Almost surely, 2^215397118480 is an apocalyptic number.

215397118480 is a gapful number since it is divisible by the number (20) 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 215397118480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253726349760).

215397118480 is an abundant number, since it is smaller than the sum of its proper divisors (292055581040).

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

215397118480 is a wasteful number, since it uses less digits than its factorization.

215397118480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92768 (or 92762 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 215397118480 in words is "two hundred fifteen billion, three hundred ninety-seven million, one hundred eighteen thousand, four hundred eighty".