1807720454453 has 2 divisors, whose sum is σ = 1807720454454. Its totient is φ = 1807720454452.

The previous prime is 1807720454443. The next prime is 1807720454471. The reversal of 1807720454453 is 3544540277081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1058875986289 + 748844468164 = 1029017^2 + 865358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1807720454453 - 2¹⁶ = 1807720388917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1807720454443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903860227226 + 903860227227.

It is an arithmetic number, because the mean of its divisors is an integer number (903860227227).

Almost surely, 2^{1807720454453} is an apocalyptic number.

It is an amenable number.

1807720454453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1807720454453 is an equidigital number, since it uses as much as digits as its factorization.

1807720454453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3763200, while the sum is 50.

The spelling of 1807720454453 in words is "one trillion, eight hundred seven billion, seven hundred twenty million, four hundred fifty-four thousand, four hundred fifty-three".