49775641666 has 16 divisors (see below), whose sum is σ = 80420868000. Its totient is φ = 23029610688.

The previous prime is 49775641631. The next prime is 49775641717. The reversal of 49775641666 is 66614657794.

It is a super-2 number, since 2×49775641666² (a number of 22 digits) contains 22 as substring.

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, 15229591 + ... + 15232858.

It is an arithmetic number, because the mean of its divisors is an integer number (5026304250).

Almost surely, 2^49775641666 is an apocalyptic number.

49775641666 is a deficient number, since it is larger than the sum of its proper divisors (30645226334).

49775641666 is a wasteful number, since it uses less digits than its factorization.

49775641666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30462513.

The product of its digits is 45722880, while the sum is 61.

The spelling of 49775641666 in words is "forty-nine billion, seven hundred seventy-five million, six hundred forty-one thousand, six hundred sixty-six".