78616046101 has 4 divisors (see below), whose sum is σ = 79904833804. Its totient is φ = 77327258400.

The previous prime is 78616046077. The next prime is 78616046137. The reversal of 78616046101 is 10164061687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10164061687 = 13 ⋅781850899.

It can be written as a sum of positive squares in 2 ways, for example, as 36273107025 + 42342939076 = 190455^2 + 205774^2 .

It is a cyclic number.

It is not a de Polignac number, because 78616046101 - 2¹⁹ = 78615521813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78616046501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 644393760 + ... + 644393881.

It is an arithmetic number, because the mean of its divisors is an integer number (19976208451).

Almost surely, 2^78616046101 is an apocalyptic number.

It is an amenable number.

78616046101 is a deficient number, since it is larger than the sum of its proper divisors (1288787703).

78616046101 is a wasteful number, since it uses less digits than its factorization.

78616046101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288787702.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 78616046101 in words is "seventy-eight billion, six hundred sixteen million, forty-six thousand, one hundred one".