77427355967 has 8 divisors (see below), whose sum is σ = 88288207056. Its totient is φ = 67267204992.

The previous prime is 77427355961. The next prime is 77427355979. The reversal of 77427355967 is 76955372477.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77427355967 - 2⁸ = 77427355711 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 (77427355961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175174793 + ... + 175175234.

It is an arithmetic number, because the mean of its divisors is an integer number (11036025882).

Almost surely, 2^77427355967 is an apocalyptic number.

77427355967 is a deficient number, since it is larger than the sum of its proper divisors (10860851089).

77427355967 is a wasteful number, since it uses less digits than its factorization.

77427355967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350350057.

The product of its digits is 77792400, while the sum is 62.

The spelling of 77427355967 in words is "seventy-seven billion, four hundred twenty-seven million, three hundred fifty-five thousand, nine hundred sixty-seven".