49881666666667 has 16 divisors (see below), whose sum is σ = 57698487792000. Its totient is φ = 42646708319040.

The previous prime is 49881666666653. The next prime is 49881666666673. The reversal of 49881666666667 is 76666666618894.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49881666666667 is a prime.

It is a super-4 number, since 4×49881666666667⁴ (a number of 56 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (49881666666067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871023417 + ... + 871080682.

It is an arithmetic number, because the mean of its divisors is an integer number (3606155487000).

Almost surely, 2^{49881666666667} is an apocalyptic number.

49881666666667 is a deficient number, since it is larger than the sum of its proper divisors (7816821125333).

49881666666667 is a wasteful number, since it uses less digits than its factorization.

49881666666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742104266.

The product of its digits is 27088846848, while the sum is 85.

The spelling of 49881666666667 in words is "forty-nine trillion, eight hundred eighty-one billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-seven".