78872352139 has 8 divisors (see below), whose sum is σ = 90170194688. Its totient is φ = 67582100520.

The previous prime is 78872352137. The next prime is 78872352157. The reversal of 78872352139 is 93125327887.

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 78872352139 - 2¹ = 78872352137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78872352139.

It is not an unprimeable number, because it can be changed into a prime (78872352137) 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, 1875447 + ... + 1917040.

It is an arithmetic number, because the mean of its divisors is an integer number (11271274336).

Almost surely, 2^78872352139 is an apocalyptic number.

78872352139 is a deficient number, since it is larger than the sum of its proper divisors (11297842549).

78872352139 is a wasteful number, since it uses less digits than its factorization.

78872352139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795465.

The product of its digits is 5080320, while the sum is 55.

The spelling of 78872352139 in words is "seventy-eight billion, eight hundred seventy-two million, three hundred fifty-two thousand, one hundred thirty-nine".