65139310889890 has 16 divisors (see below), whose sum is σ = 117263336275008. Its totient is φ = 26052929539696.

The previous prime is 65139310889879. The next prime is 65139310889909. The reversal of 65139310889890 is 9898801393156.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349254142 + ... + 349440601.

It is an arithmetic number, because the mean of its divisors is an integer number (7328958517188).

Almost surely, 2^{65139310889890} is an apocalyptic number.

65139310889890 is a deficient number, since it is larger than the sum of its proper divisors (52124025385118).

65139310889890 is a wasteful number, since it uses less digits than its factorization.

65139310889890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698704073.

The product of its (nonzero) digits is 100776960, while the sum is 70.

The spelling of 65139310889890 in words is "sixty-five trillion, one hundred thirty-nine billion, three hundred ten million, eight hundred eighty-nine thousand, eight hundred ninety".