77703677045 has 4 divisors (see below), whose sum is σ = 93244412460. Its totient is φ = 62162941632.

The previous prime is 77703677041. The next prime is 77703677081. The reversal of 77703677045 is 54077630777.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22029386929 + 55674290116 = 148423^2 + 235954^2 .

It is a cyclic number.

It is not a de Polignac number, because 77703677045 - 2² = 77703677041 is a prime.

It is a super-2 number, since 2×77703677045² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77703677041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7770367700 + ... + 7770367709.

It is an arithmetic number, because the mean of its divisors is an integer number (23311103115).

Almost surely, 2^77703677045 is an apocalyptic number.

It is an amenable number.

77703677045 is a deficient number, since it is larger than the sum of its proper divisors (15540735415).

77703677045 is a wasteful number, since it uses less digits than its factorization.

77703677045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540735414.

The product of its (nonzero) digits is 6050520, while the sum is 53.

The spelling of 77703677045 in words is "seventy-seven billion, seven hundred three million, six hundred seventy-seven thousand, forty-five".