215483653560 has 128 divisors (see below), whose sum is σ = 739742123520. Its totient is φ = 49190671872.

The previous prime is 215483653549. The next prime is 215483653591. The reversal of 215483653560 is 65356384512.

It is a super-2 number, since 2×215483653560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498102 + ... + 824058.

It is an arithmetic number, because the mean of its divisors is an integer number (5779235340).

Almost surely, 2^215483653560 is an apocalyptic number.

215483653560 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 215483653560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369871061760).

215483653560 is an abundant number, since it is smaller than the sum of its proper divisors (524258469960).

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

215483653560 is a wasteful number, since it uses less digits than its factorization.

215483653560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326765 (or 326761 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 215483653560 in words is "two hundred fifteen billion, four hundred eighty-three million, six hundred fifty-three thousand, five hundred sixty".