6780433122581 has 4 divisors (see below), whose sum is σ = 6924697657152. Its totient is φ = 6636168588012.

The previous prime is 6780433122557. The next prime is 6780433122601. The reversal of 6780433122581 is 1852213340876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6780433122581 - 2⁶ = 6780433122517 is a prime.

It is a super-2 number, since 2×6780433122581² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780433122521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72132267215 + ... + 72132267308.

It is an arithmetic number, because the mean of its divisors is an integer number (1731174414288).

Almost surely, 2^{6780433122581} is an apocalyptic number.

It is an amenable number.

6780433122581 is a deficient number, since it is larger than the sum of its proper divisors (144264534571).

6780433122581 is a wasteful number, since it uses less digits than its factorization.

6780433122581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144264534570.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 6780433122581 in words is "six trillion, seven hundred eighty billion, four hundred thirty-three million, one hundred twenty-two thousand, five hundred eighty-one".