78911042311 has 4 divisors (see below), whose sum is σ = 78948639000. Its totient is φ = 78873445624.

The previous prime is 78911042281. The next prime is 78911042333. The reversal of 78911042311 is 11324011987.

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 78911042311 - 2⁵ = 78911042279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78911042341) 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, 18795196 + ... + 18799393.

It is an arithmetic number, because the mean of its divisors is an integer number (19737159750).

Almost surely, 2^78911042311 is an apocalyptic number.

78911042311 is a deficient number, since it is larger than the sum of its proper divisors (37596689).

78911042311 is a wasteful number, since it uses less digits than its factorization.

78911042311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37596688.

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 78911042311 in words is "seventy-eight billion, nine hundred eleven million, forty-two thousand, three hundred eleven".