68387078386 has 48 divisors (see below), whose sum is σ = 114210797400. Its totient is φ = 30685248000.

The previous prime is 68387078381. The next prime is 68387078407.

68387078386 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 68130918361 + 256160025 = 261019^2 + 16005^2 .

It is not an unprimeable number, because it can be changed into a prime (68387078381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8526250 + ... + 8534266.

Almost surely, 2^68387078386 is an apocalyptic number.

68387078386 is a deficient number, since it is larger than the sum of its proper divisors (45823719014).

68387078386 is a wasteful number, since it uses less digits than its factorization.

68387078386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491 (or 8480 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 68387078386 in words is "sixty-eight billion, three hundred eighty-seven million, seventy-eight thousand, three hundred eighty-six".