838984366081 has 16 divisors (see below), whose sum is σ = 886082146560. Its totient is φ = 792183283200.

The previous prime is 838984366063. The next prime is 838984366091. The reversal of 838984366081 is 180663489838.

It is a cyclic number.

It is not a de Polignac number, because 838984366081 - 2¹³ = 838984357889 is a prime.

It is a super-2 number, since 2×838984366081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838984366091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11797731 + ... + 11868631.

It is an arithmetic number, because the mean of its divisors is an integer number (55380134160).

Almost surely, 2^838984366081 is an apocalyptic number.

It is an amenable number.

838984366081 is a deficient number, since it is larger than the sum of its proper divisors (47097780479).

838984366081 is a wasteful number, since it uses less digits than its factorization.

838984366081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72984.

The product of its (nonzero) digits is 47775744, while the sum is 64.

The spelling of 838984366081 in words is "eight hundred thirty-eight billion, nine hundred eighty-four million, three hundred sixty-six thousand, eighty-one".