78639836120246 has 8 divisors (see below), whose sum is σ = 118316128061064. Its totient is φ = 39201126766560.

The previous prime is 78639836120171. The next prime is 78639836120353. The reversal of 78639836120246 is 64202163893687.

It is a happy number.

78639836120246 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×78639836120246² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59395645955 + ... + 59395647278.

It is an arithmetic number, because the mean of its divisors is an integer number (14789516007633).

Almost surely, 2^{78639836120246} is an apocalyptic number.

78639836120246 is a deficient number, since it is larger than the sum of its proper divisors (39676291940818).

78639836120246 is a wasteful number, since it uses less digits than its factorization.

78639836120246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118791293566.

The product of its (nonzero) digits is 125411328, while the sum is 65.

The spelling of 78639836120246 in words is "seventy-eight trillion, six hundred thirty-nine billion, eight hundred thirty-six million, one hundred twenty thousand, two hundred forty-six".