78938726127 has 4 divisors (see below), whose sum is σ = 105251634840. Its totient is φ = 52625817416.

The previous prime is 78938726117. The next prime is 78938726183. The reversal of 78938726127 is 72162783987.

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

It is a cyclic number.

It is not a de Polignac number, because 78938726127 - 2¹¹ = 78938724079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78938726117) 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, 13156454352 + ... + 13156454357.

It is an arithmetic number, because the mean of its divisors is an integer number (26312908710).

Almost surely, 2^78938726127 is an apocalyptic number.

78938726127 is a deficient number, since it is larger than the sum of its proper divisors (26312908713).

78938726127 is a wasteful number, since it uses less digits than its factorization.

78938726127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26312908712.

The product of its digits is 14224896, while the sum is 60.

The spelling of 78938726127 in words is "seventy-eight billion, nine hundred thirty-eight million, seven hundred twenty-six thousand, one hundred twenty-seven".