78507202875113 has 4 divisors (see below), whose sum is σ = 78544784113620. Its totient is φ = 78469621636608.

The previous prime is 78507202875107. The next prime is 78507202875119. The reversal of 78507202875113 is 31157820270587.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78507202875107) and next prime (78507202875119).

It can be written as a sum of positive squares in 2 ways, for example, as 33971493849049 + 44535709026064 = 5828507^2 + 6673508^2 .

It is a cyclic number.

It is not a de Polignac number, because 78507202875113 - 2¹⁶ = 78507202809577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78507202875119) 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, 18790616120 + ... + 18790620297.

It is an arithmetic number, because the mean of its divisors is an integer number (19636196028405).

Almost surely, 2^{78507202875113} is an apocalyptic number.

It is an amenable number.

78507202875113 is a deficient number, since it is larger than the sum of its proper divisors (37581238507).

78507202875113 is a wasteful number, since it uses less digits than its factorization.

78507202875113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37581238506.

The product of its (nonzero) digits is 6585600, while the sum is 56.

The spelling of 78507202875113 in words is "seventy-eight trillion, five hundred seven billion, two hundred two million, eight hundred seventy-five thousand, one hundred thirteen".