78396680102 has 16 divisors (see below), whose sum is σ = 133306096560. Its totient is φ = 34278710112.

The previous prime is 78396680069. The next prime is 78396680119. The reversal of 78396680102 is 20108669387.

It is a super-2 number, since 2×78396680102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79348373 + ... + 79349360.

It is an arithmetic number, because the mean of its divisors is an integer number (8331631035).

Almost surely, 2^78396680102 is an apocalyptic number.

78396680102 is a deficient number, since it is larger than the sum of its proper divisors (54909416458).

78396680102 is a wasteful number, since it uses less digits than its factorization.

78396680102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158697767.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 78396680102 in words is "seventy-eight billion, three hundred ninety-six million, six hundred eighty thousand, one hundred two".