1780540055297 has 2 divisors, whose sum is σ = 1780540055298. Its totient is φ = 1780540055296.

The previous prime is 1780540055221. The next prime is 1780540055317. The reversal of 1780540055297 is 7925500450871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295899917376 + 484640137921 = 1138376^2 + 696161^2 .

It is a cyclic number.

It is not a de Polignac number, because 1780540055297 - 2¹² = 1780540051201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1780540052297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890270027648 + 890270027649.

It is an arithmetic number, because the mean of its divisors is an integer number (890270027649).

Almost surely, 2^{1780540055297} is an apocalyptic number.

It is an amenable number.

1780540055297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1780540055297 is an equidigital number, since it uses as much as digits as its factorization.

1780540055297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528000, while the sum is 53.

The spelling of 1780540055297 in words is "one trillion, seven hundred eighty billion, five hundred forty million, fifty-five thousand, two hundred ninety-seven".