78965330530961 has 4 divisors (see below), whose sum is σ = 90246092035392. Its totient is φ = 67684569026532.

The previous prime is 78965330530943. The next prime is 78965330530963. The reversal of 78965330530961 is 16903503356987.

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 78965330530961 - 2³⁰ = 78964256789137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78965330530963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5640380752205 + ... + 5640380752218.

It is an arithmetic number, because the mean of its divisors is an integer number (22561523008848).

Almost surely, 2^{78965330530961} is an apocalyptic number.

It is an amenable number.

78965330530961 is a deficient number, since it is larger than the sum of its proper divisors (11280761504431).

78965330530961 is a wasteful number, since it uses less digits than its factorization.

78965330530961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11280761504430.

The product of its (nonzero) digits is 110224800, while the sum is 65.

The spelling of 78965330530961 in words is "seventy-eight trillion, nine hundred sixty-five billion, three hundred thirty million, five hundred thirty thousand, nine hundred sixty-one".