215156151540000 has 720 divisors, whose sum is σ = 834235871493024. Its totient is φ = 52148966400000.

The previous prime is 215156151539993. The next prime is 215156151540017. The reversal of 215156151540000 is 45151651512.

215156151540000 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 5 + 61 + 51 + 540 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 18000174024 + ... + 18000185976.

Almost surely, 2^{215156151540000} is an apocalyptic number.

215156151540000 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 215156151540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417117935746512).

215156151540000 is an abundant number, since it is smaller than the sum of its proper divisors (619079719953024).

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

215156151540000 is a wasteful number, since it uses less digits than its factorization.

215156151540000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21091 (or 21065 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 36.

The spelling of 215156151540000 in words is "two hundred fifteen trillion, one hundred fifty-six billion, one hundred fifty-one million, five hundred forty thousand".