78921741175 has 6 divisors (see below), whose sum is σ = 97862959088. Its totient is φ = 63137392920.

The previous prime is 78921741097. The next prime is 78921741181. The reversal of 78921741175 is 57114712987.

It is a de Polignac number, because none of the positive numbers 2^k-78921741175 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1578434799 + ... + 1578434848.

Almost surely, 2^78921741175 is an apocalyptic number.

78921741175 is a deficient number, since it is larger than the sum of its proper divisors (18941217913).

78921741175 is a wasteful number, since it uses less digits than its factorization.

78921741175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156869657 (or 3156869652 counting only the distinct ones).

The product of its digits is 987840, while the sum is 52.

The spelling of 78921741175 in words is "seventy-eight billion, nine hundred twenty-one million, seven hundred forty-one thousand, one hundred seventy-five".