1780540051201 has 2 divisors, whose sum is σ = 1780540051202. Its totient is φ = 1780540051200.

The previous prime is 1780540051151. The next prime is 1780540051217. The reversal of 1780540051201 is 1021500450871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1750792080625 + 29747970576 = 1323175^2 + 172476^2 .

It is an emirp because it is prime and its reverse (1021500450871) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1780540051201 - 2⁹ = 1780540050689 is a prime.

It is not a weakly prime, because it can be changed into another prime (1780540021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 890270025600 + 890270025601.

It is an arithmetic number, because the mean of its divisors is an integer number (890270025601).

Almost surely, 2^{1780540051201} is an apocalyptic number.

It is an amenable number.

1780540051201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1780540051201 is an equidigital number, since it uses as much as digits as its factorization.

1780540051201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 34.

The spelling of 1780540051201 in words is "one trillion, seven hundred eighty billion, five hundred forty million, fifty-one thousand, two hundred one".