2151321445413 has 48 divisors (see below), whose sum is σ = 3647990376576. Its totient is φ = 1195898463360.

The previous prime is 2151321445409. The next prime is 2151321445433. The reversal of 2151321445413 is 3145441231512.

2151321445413 is a `hidden beast` number, since 2 + 1 + 51 + 3 + 21 + 44 + 541 + 3 = 666.

It is not a de Polignac number, because 2151321445413 - 2² = 2151321445409 is a prime.

It is a super-2 number, since 2×2151321445413² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151321445433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14216095 + ... + 14366627.

It is an arithmetic number, because the mean of its divisors is an integer number (75999799512).

Almost surely, 2^{2151321445413} is an apocalyptic number.

It is an amenable number.

2151321445413 is a deficient number, since it is larger than the sum of its proper divisors (1496668931163).

2151321445413 is a wasteful number, since it uses less digits than its factorization.

2151321445413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156714 (or 156711 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 2151321445413 its reverse (3145441231512), we get a palindrome (5296762676925).

The spelling of 2151321445413 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-one million, four hundred forty-five thousand, four hundred thirteen".