77111311404191 has 4 divisors (see below), whose sum is σ = 77241347343072. Its totient is φ = 76981275465312.

The previous prime is 77111311404173. The next prime is 77111311404217. The reversal of 77111311404191 is 19140411311177.

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 77111311404191 - 2³⁴ = 77094131535007 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 (77111311404121) 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, 65017968551 + ... + 65017969736.

It is an arithmetic number, because the mean of its divisors is an integer number (19310336835768).

Almost surely, 2^{77111311404191} is an apocalyptic number.

77111311404191 is a deficient number, since it is larger than the sum of its proper divisors (130035938881).

77111311404191 is a wasteful number, since it uses less digits than its factorization.

77111311404191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130035938880.

The product of its (nonzero) digits is 21168, while the sum is 41.

The spelling of 77111311404191 in words is "seventy-seven trillion, one hundred eleven billion, three hundred eleven million, four hundred four thousand, one hundred ninety-one".