78369397361 has 8 divisors (see below), whose sum is σ = 78554895360. Its totient is φ = 78184115568.

The previous prime is 78369397357. The next prime is 78369397399. The reversal of 78369397361 is 16379396387.

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

It is a cyclic number.

It is not a de Polignac number, because 78369397361 - 2² = 78369397357 is a prime.

It is a super-2 number, since 2×78369397361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78369397294 and 78369397303.

It is not an unprimeable number, because it can be changed into a prime (78369397661) 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 7 ways as a sum of consecutive naturals, for example, 683600 + ... + 789966.

It is an arithmetic number, because the mean of its divisors is an integer number (9819361920).

Almost surely, 2^78369397361 is an apocalyptic number.

It is an amenable number.

78369397361 is a deficient number, since it is larger than the sum of its proper divisors (185497999).

78369397361 is a wasteful number, since it uses less digits than its factorization.

78369397361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108103.

The product of its digits is 30862944, while the sum is 62.

The spelling of 78369397361 in words is "seventy-eight billion, three hundred sixty-nine million, three hundred ninety-seven thousand, three hundred sixty-one".