77080038068 has 18 divisors (see below), whose sum is σ = 148267594818. Its totient is φ = 35036380720.

The previous prime is 77080038067. The next prime is 77080038097. The reversal of 77080038068 is 86083008077.

It can be written as a sum of positive squares in only one way, i.e., 55682784784 + 21397253284 = 235972^2 + 146278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77080038067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79627655 + ... + 79628622.

It is an arithmetic number, because the mean of its divisors is an integer number (8237088601).

Almost surely, 2^77080038068 is an apocalyptic number.

It is an amenable number.

77080038068 is a deficient number, since it is larger than the sum of its proper divisors (71187556750).

77080038068 is a wasteful number, since it uses less digits than its factorization.

77080038068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159256303 (or 159256290 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 77080038068 in words is "seventy-seven billion, eighty million, thirty-eight thousand, sixty-eight".