215356452325542 has 256 divisors, whose sum is σ = 562403229696000. Its totient is φ = 60402674851200.

The previous prime is 215356452325507. The next prime is 215356452325561. The reversal of 215356452325542 is 245523254653512.

215356452325542 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 5 + 6 + 4 + 52 + 32 + 554 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6195685959 + ... + 6195720717.

It is an arithmetic number, because the mean of its divisors is an integer number (2196887616000).

Almost surely, 2^{215356452325542} is an apocalyptic number.

215356452325542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 215356452325542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281201614848000).

215356452325542 is an abundant number, since it is smaller than the sum of its proper divisors (347046777370458).

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

215356452325542 is a wasteful number, since it uses less digits than its factorization.

215356452325542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49464 (or 49458 counting only the distinct ones).

The product of its digits is 43200000, while the sum is 54.

The spelling of 215356452325542 in words is "two hundred fifteen trillion, three hundred fifty-six billion, four hundred fifty-two million, three hundred twenty-five thousand, five hundred forty-two".