2151321445415 has 16 divisors (see below), whose sum is σ = 2603393312256. Its totient is φ = 1706576352000.

The previous prime is 2151321445409. The next prime is 2151321445433. The reversal of 2151321445415 is 5145441231512.

It is not a de Polignac number, because 2151321445415 - 2²⁴ = 2151304668199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3299636 + ... + 3897465.

It is an arithmetic number, because the mean of its divisors is an integer number (162712082016).

Almost surely, 2^{2151321445415} is an apocalyptic number.

2151321445415 is a deficient number, since it is larger than the sum of its proper divisors (452071866841).

2151321445415 is a wasteful number, since it uses less digits than its factorization.

2151321445415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197610.

The product of its digits is 96000, while the sum is 38.

Adding to 2151321445415 its reverse (5145441231512), we get a palindrome (7296762676927).

The spelling of 2151321445415 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-one million, four hundred forty-five thousand, four hundred fifteen".