2145421453315 has 16 divisors (see below), whose sum is σ = 2943742495680. Its totient is φ = 1470421031040.

The previous prime is 2145421453313. The next prime is 2145421453349. The reversal of 2145421453315 is 5133541245412.

It is not a de Polignac number, because 2145421453315 - 2¹ = 2145421453313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145421453313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15034396 + ... + 15176425.

It is an arithmetic number, because the mean of its divisors is an integer number (183983905980).

Almost surely, 2^{2145421453315} is an apocalyptic number.

2145421453315 is a deficient number, since it is larger than the sum of its proper divisors (798321042365).

2145421453315 is a wasteful number, since it uses less digits than its factorization.

2145421453315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30212862.

The product of its digits is 288000, while the sum is 40.

Adding to 2145421453315 its reverse (5133541245412), we get a palindrome (7278962698727).

The spelling of 2145421453315 in words is "two trillion, one hundred forty-five billion, four hundred twenty-one million, four hundred fifty-three thousand, three hundred fifteen".