77343701378 has 8 divisors (see below), whose sum is σ = 117079915260. Its totient is φ = 38317062960.

The previous prime is 77343701291. The next prime is 77343701389. The reversal of 77343701378 is 87310734377.

It can be written as a sum of positive squares in 2 ways, for example, as 76714042729 + 629658649 = 276973^2 + 25093^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177393593 + ... + 177394028.

Almost surely, 2^77343701378 is an apocalyptic number.

77343701378 is a deficient number, since it is larger than the sum of its proper divisors (39736213882).

77343701378 is a wasteful number, since it uses less digits than its factorization.

77343701378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354787732.

The product of its (nonzero) digits is 2074464, while the sum is 50.

The spelling of 77343701378 in words is "seventy-seven billion, three hundred forty-three million, seven hundred one thousand, three hundred seventy-eight".