78108313751 has 16 divisors (see below), whose sum is σ = 85011591168. Its totient is φ = 71336700000.

The previous prime is 78108313733. The next prime is 78108313753. The reversal of 78108313751 is 15731380187.

It is a cyclic number.

It is not a de Polignac number, because 78108313751 - 2⁶ = 78108313687 is a prime.

It is a super-3 number, since 3×78108313751³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78108313753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413450 + ... + 571976.

It is an arithmetic number, because the mean of its divisors is an integer number (5313224448).

Almost surely, 2^78108313751 is an apocalyptic number.

78108313751 is a deficient number, since it is larger than the sum of its proper divisors (6903277417).

78108313751 is a wasteful number, since it uses less digits than its factorization.

78108313751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158942.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 78108313751 in words is "seventy-eight billion, one hundred eight million, three hundred thirteen thousand, seven hundred fifty-one".