2451435451321 has 2 divisors, whose sum is σ = 2451435451322. Its totient is φ = 2451435451320.

The previous prime is 2451435451279. The next prime is 2451435451327. The reversal of 2451435451321 is 1231545341542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1518403095225 + 933032356096 = 1232235^2 + 965936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2451435451321 - 2¹¹ = 2451435449273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2451435451327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1225717725660 + 1225717725661.

It is an arithmetic number, because the mean of its divisors is an integer number (1225717725661).

Almost surely, 2^{2451435451321} is an apocalyptic number.

It is an amenable number.

2451435451321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2451435451321 is an equidigital number, since it uses as much as digits as its factorization.

2451435451321 is an evil number, because the sum of its binary digits is even.

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

The spelling of 2451435451321 in words is "two trillion, four hundred fifty-one billion, four hundred thirty-five million, four hundred fifty-one thousand, three hundred twenty-one".