77703670370408 has 16 divisors (see below), whose sum is σ = 145694834373060. Its totient is φ = 38851714537600.

The previous prime is 77703670370407. The next prime is 77703670370461. The reversal of 77703670370408 is 80407307630777.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72839431298404 + 4864239072004 = 8534602^2 + 2205502^2 .

It is not an unprimeable number, because it can be changed into a prime (77703670370407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12313853 + ... + 17522508.

Almost surely, 2^{77703670370408} is an apocalyptic number.

It is an amenable number.

77703670370408 is a deficient number, since it is larger than the sum of its proper divisors (67991164002652).

77703670370408 is a wasteful number, since it uses less digits than its factorization.

77703670370408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30161908 (or 30161904 counting only the distinct ones).

The product of its (nonzero) digits is 29042496, while the sum is 59.

The spelling of 77703670370408 in words is "seventy-seven trillion, seven hundred three billion, six hundred seventy million, three hundred seventy thousand, four hundred eight".