2151321445433 has 2 divisors, whose sum is σ = 2151321445434. Its totient is φ = 2151321445432.

The previous prime is 2151321445409. The next prime is 2151321445453. The reversal of 2151321445433 is 3345441231512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1248844245289 + 902477200144 = 1117517^2 + 949988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151321445433 - 2¹⁰ = 2151321444409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2151321445453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075660722716 + 1075660722717.

It is an arithmetic number, because the mean of its divisors is an integer number (1075660722717).

Almost surely, 2^{2151321445433} is an apocalyptic number.

It is an amenable number.

2151321445433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151321445433 is an equidigital number, since it uses as much as digits as its factorization.

2151321445433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 38.

Adding to 2151321445433 its reverse (3345441231512), we get a palindrome (5496762676945).

The spelling of 2151321445433 in words is "two trillion, one hundred fifty-one billion, three hundred twenty-one million, four hundred forty-five thousand, four hundred thirty-three".