1780837785013 has 16 divisors (see below), whose sum is σ = 2050218086400. Its totient is φ = 1515202505856.

The previous prime is 1780837784993. The next prime is 1780837785019. The reversal of 1780837785013 is 3105877380871.

It is a cyclic number.

It is not a de Polignac number, because 1780837785013 - 2²¹ = 1780835687861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1780837785019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20568588 + ... + 20654986.

It is an arithmetic number, because the mean of its divisors is an integer number (128138630400).

Almost surely, 2^{1780837785013} is an apocalyptic number.

It is an amenable number.

1780837785013 is a deficient number, since it is larger than the sum of its proper divisors (269380301387).

1780837785013 is a wasteful number, since it uses less digits than its factorization.

1780837785013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108036.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 1780837785013 in words is "one trillion, seven hundred eighty billion, eight hundred thirty-seven million, seven hundred eighty-five thousand, thirteen".