1780568213145 has 32 divisors (see below), whose sum is σ = 2952252472320. Its totient is φ = 915427000320.

The previous prime is 1780568213143. The next prime is 1780568213189. The reversal of 1780568213145 is 5413128650871.

It is not a de Polignac number, because 1780568213145 - 2¹ = 1780568213143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1780568213143) 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 in 31 ways as a sum of consecutive naturals, for example, 7330260 + ... + 7569269.

It is an arithmetic number, because the mean of its divisors is an integer number (92257889760).

Almost surely, 2^{1780568213145} is an apocalyptic number.

1780568213145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1780568213145 is a deficient number, since it is larger than the sum of its proper divisors (1171684259175).

1780568213145 is a wasteful number, since it uses less digits than its factorization.

1780568213145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14899825.

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 1780568213145 in words is "one trillion, seven hundred eighty billion, five hundred sixty-eight million, two hundred thirteen thousand, one hundred forty-five".