215154140454355 has 8 divisors (see below), whose sum is σ = 258185236799232. Its totient is φ = 172123133527488.

The previous prime is 215154140454349. The next prime is 215154140454367. The reversal of 215154140454355 is 553454041451512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215154140454355 - 2⁹ = 215154140453843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215154140454299 and 215154140454308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16941802 + ... + 26783071.

It is an arithmetic number, because the mean of its divisors is an integer number (32273154599904).

Almost surely, 2^{215154140454355} is an apocalyptic number.

215154140454355 is a deficient number, since it is larger than the sum of its proper divisors (43031096344877).

215154140454355 is an equidigital number, since it uses as much as digits as its factorization.

215154140454355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44709005.

The product of its (nonzero) digits is 4800000, while the sum is 49.

The spelling of 215154140454355 in words is "two hundred fifteen trillion, one hundred fifty-four billion, one hundred forty million, four hundred fifty-four thousand, three hundred fifty-five".