78286773139 has 8 divisors (see below), whose sum is σ = 82418490000. Its totient is φ = 74156192352.

The previous prime is 78286773127. The next prime is 78286773143. The reversal of 78286773139 is 93137768287.

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

It is a cyclic number.

It is not a de Polignac number, because 78286773139 - 2⁵ = 78286773107 is a prime.

It is a super-2 number, since 2×78286773139² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78286771139) 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 7 ways as a sum of consecutive naturals, for example, 140704 + ... + 419965.

It is an arithmetic number, because the mean of its divisors is an integer number (10302311250).

Almost surely, 2^78286773139 is an apocalyptic number.

78286773139 is a deficient number, since it is larger than the sum of its proper divisors (4131716861).

78286773139 is a wasteful number, since it uses less digits than its factorization.

78286773139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568037.

The product of its digits is 21337344, while the sum is 61.

The spelling of 78286773139 in words is "seventy-eight billion, two hundred eighty-six million, seven hundred seventy-three thousand, one hundred thirty-nine".