2154342105215 has 8 divisors (see below), whose sum is σ = 2585487876048. Its totient is φ = 1723288784320.

The previous prime is 2154342105199. The next prime is 2154342105217. The reversal of 2154342105215 is 5125012434512.

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

It is not a de Polignac number, because 2154342105215 - 2⁴ = 2154342105199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154342105217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23061206 + ... + 23154435.

It is an arithmetic number, because the mean of its divisors is an integer number (323185984506).

Almost surely, 2^{2154342105215} is an apocalyptic number.

2154342105215 is a deficient number, since it is larger than the sum of its proper divisors (431145770833).

2154342105215 is an equidigital number, since it uses as much as digits as its factorization.

2154342105215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46224969.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 2154342105215 its reverse (5125012434512), we get a palindrome (7279354539727).

The spelling of 2154342105215 in words is "two trillion, one hundred fifty-four billion, three hundred forty-two million, one hundred five thousand, two hundred fifteen".