78396109165306 has 8 divisors (see below), whose sum is σ = 117618505340544. Its totient is φ = 39189940718460.

The previous prime is 78396109165303. The next prime is 78396109165343. The reversal of 78396109165306 is 60356190169387.

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

It is a super-2 number, since 2×78396109165306² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78396109165303) 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, 4056920020 + ... + 4056939343.

It is an arithmetic number, because the mean of its divisors is an integer number (14702313167568).

Almost surely, 2^{78396109165306} is an apocalyptic number.

78396109165306 is a deficient number, since it is larger than the sum of its proper divisors (39222396175238).

78396109165306 is a wasteful number, since it uses less digits than its factorization.

78396109165306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113864196.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 78396109165306 in words is "seventy-eight trillion, three hundred ninety-six billion, one hundred nine million, one hundred sixty-five thousand, three hundred six".