68390745346 has 64 divisors (see below), whose sum is σ = 128599695360. Its totient is φ = 26500320000.

The previous prime is 68390745229. The next prime is 68390745383. The reversal of 68390745346 is 64354709386.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24415146 + ... + 24417946.

It is an arithmetic number, because the mean of its divisors is an integer number (2009370240).

Almost surely, 2^68390745346 is an apocalyptic number.

68390745346 is a deficient number, since it is larger than the sum of its proper divisors (60208950014).

68390745346 is a wasteful number, since it uses less digits than its factorization.

68390745346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 68390745346 in words is "sixty-eight billion, three hundred ninety million, seven hundred forty-five thousand, three hundred forty-six".