78384927135 has 16 divisors (see below), whose sum is σ = 125420037984. Its totient is φ = 41803909632.

The previous prime is 78384927113. The next prime is 78384927193. The reversal of 78384927135 is 53172948387.

It is not a de Polignac number, because 78384927135 - 2²¹ = 78382829983 is a prime.

It is a super-2 number, since 2×78384927135² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517219 + ... + 651371.

It is an arithmetic number, because the mean of its divisors is an integer number (7838752374).

Almost surely, 2^78384927135 is an apocalyptic number.

78384927135 is a deficient number, since it is larger than the sum of its proper divisors (47035110849).

78384927135 is a wasteful number, since it uses less digits than its factorization.

78384927135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173114.

The product of its digits is 10160640, while the sum is 57.

The spelling of 78384927135 in words is "seventy-eight billion, three hundred eighty-four million, nine hundred twenty-seven thousand, one hundred thirty-five".