9780816180879 has 48 divisors (see below), whose sum is σ = 15377985567360. Its totient is φ = 5965367731200.

The previous prime is 9780816180847. The next prime is 9780816180907.

9780816180879 is nontrivially palindromic in base 10.

9780816180879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9780816180879 - 2⁵ = 9780816180847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780816180379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5050329 + ... + 6713229.

It is an arithmetic number, because the mean of its divisors is an integer number (320374699320).

Almost surely, 2^{9780816180879} is an apocalyptic number.

9780816180879 is a deficient number, since it is larger than the sum of its proper divisors (5597169386481).

9780816180879 is a wasteful number, since it uses less digits than its factorization.

9780816180879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664000 (or 1663997 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 72.

The spelling of 9780816180879 in words is "nine trillion, seven hundred eighty billion, eight hundred sixteen million, one hundred eighty thousand, eight hundred seventy-nine".