5580780961978 has 8 divisors (see below), whose sum is σ = 8424491006772. Its totient is φ = 2772617293056.

The previous prime is 5580780961919. The next prime is 5580780961993. The reversal of 5580780961978 is 8791690870855.

It can be written as a sum of positive squares in 2 ways, for example, as 5378053197969 + 202727764009 = 2319063^2 + 450253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×5580780961978² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5580780961978.

It is an unprimeable number.

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, 8886593575 + ... + 8886594202.

Almost surely, 2^{5580780961978} is an apocalyptic number.

5580780961978 is a deficient number, since it is larger than the sum of its proper divisors (2843710044794).

5580780961978 is a wasteful number, since it uses less digits than its factorization.

5580780961978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17773187936.

The product of its (nonzero) digits is 304819200, while the sum is 73.

The spelling of 5580780961978 in words is "five trillion, five hundred eighty billion, seven hundred eighty million, nine hundred sixty-one thousand, nine hundred seventy-eight".