780244161442087 has 4 divisors (see below), whose sum is σ = 788287915683856. Its totient is φ = 772200407200320.

The previous prime is 780244161442063. The next prime is 780244161442127.

780244161442087 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-780244161442087 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 (780244161442387) 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 3 ways as a sum of consecutive naturals, for example, 4021877120739 + ... + 4021877120932.

It is an arithmetic number, because the mean of its divisors is an integer number (197071978920964).

Almost surely, 2^{780244161442087} is an apocalyptic number.

780244161442087 is a deficient number, since it is larger than the sum of its proper divisors (8043754241769).

780244161442087 is an equidigital number, since it uses as much as digits as its factorization.

780244161442087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8043754241768.

The product of its (nonzero) digits is 19267584, while the sum is 58.

The spelling of 780244161442087 in words is "seven hundred eighty trillion, two hundred forty-four billion, one hundred sixty-one million, four hundred forty-two thousand, eighty-seven".