215534074381560 has 384 divisors, whose sum is σ = 767326053312000. Its totient is φ = 52034693760000.

The previous prime is 215534074381537. The next prime is 215534074381567. The reversal of 215534074381560 is 65183470435512.

It is a happy number.

215534074381560 is a `hidden beast` number, since 2 + 1 + 5 + 5 + 3 + 4 + 0 + 74 + 3 + 8 + 1 + 560 = 666.

215534074381560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 215534074381497 and 215534074381506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215534074381567) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9262701606 + ... + 9262724874.

It is an arithmetic number, because the mean of its divisors is an integer number (1998244930500).

Almost surely, 2^{215534074381560} is an apocalyptic number.

215534074381560 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 215534074381560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383663026656000).

215534074381560 is an abundant number, since it is smaller than the sum of its proper divisors (551791978930440).

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

215534074381560 is a wasteful number, since it uses less digits than its factorization.

215534074381560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867 (or 32860 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 215534074381560 in words is "two hundred fifteen trillion, five hundred thirty-four billion, seventy-four million, three hundred eighty-one thousand, five hundred sixty".