780967745669 has 16 divisors (see below), whose sum is σ = 848622827520. Its totient is φ = 715959509760.

The previous prime is 780967745647. The next prime is 780967745687. The reversal of 780967745669 is 966547769087.

It is not a de Polignac number, because 780967745669 - 2¹² = 780967741573 is a prime.

It is a super-2 number, since 2×780967745669² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 780967745596 and 780967745605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780967745629) 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 15 ways as a sum of consecutive naturals, for example, 3549029 + ... + 3762650.

It is an arithmetic number, because the mean of its divisors is an integer number (53038926720).

Almost surely, 2^780967745669 is an apocalyptic number.

It is an amenable number.

780967745669 is a deficient number, since it is larger than the sum of its proper divisors (67655081851).

780967745669 is a wasteful number, since it uses less digits than its factorization.

780967745669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311860.

The product of its (nonzero) digits is 960180480, while the sum is 74.

The spelling of 780967745669 in words is "seven hundred eighty billion, nine hundred sixty-seven million, seven hundred forty-five thousand, six hundred sixty-nine".