2145205143451 has 2 divisors, whose sum is σ = 2145205143452. Its totient is φ = 2145205143450.

The previous prime is 2145205143439. The next prime is 2145205143461. The reversal of 2145205143451 is 1543415025412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2145205143451 - 2⁹ = 2145205142939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2145205143451.

It is not a weakly prime, because it can be changed into another prime (2145205143461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072602571725 + 1072602571726.

It is an arithmetic number, because the mean of its divisors is an integer number (1072602571726).

Almost surely, 2^{2145205143451} is an apocalyptic number.

2145205143451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145205143451 is an equidigital number, since it uses as much as digits as its factorization.

2145205143451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 2145205143451 in words is "two trillion, one hundred forty-five billion, two hundred five million, one hundred forty-three thousand, four hundred fifty-one".