215631060480 has 360 divisors, whose sum is σ = 820863539496. Its totient is φ = 52273520640.

The previous prime is 215631060457. The next prime is 215631060481. The reversal of 215631060480 is 84060136512.

It is a happy number.

215631060480 is a `hidden beast` number, since 2 + 1 + 563 + 10 + 6 + 0 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215631060481) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2749167 + ... + 2826513.

Almost surely, 2^215631060480 is an apocalyptic number.

215631060480 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 215631060480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410431769748).

215631060480 is an abundant number, since it is smaller than the sum of its proper divisors (605232479016).

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

215631060480 is a wasteful number, since it uses less digits than its factorization.

215631060480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77398 (or 77368 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 215631060480 its reverse (84060136512), we get a palindrome (299691196992).

The spelling of 215631060480 in words is "two hundred fifteen billion, six hundred thirty-one million, sixty thousand, four hundred eighty".