49927986665 has 32 divisors (see below), whose sum is σ = 63561701376. Its totient is φ = 37583239680.

The previous prime is 49927986643. The next prime is 49927986671. The reversal of 49927986665 is 56668972994.

It is not a de Polignac number, because 49927986665 - 2¹⁰ = 49927985641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13894109 + ... + 13897701.

It is an arithmetic number, because the mean of its divisors is an integer number (1986303168).

Almost surely, 2^49927986665 is an apocalyptic number.

It is an amenable number.

49927986665 is a deficient number, since it is larger than the sum of its proper divisors (13633714711).

49927986665 is a wasteful number, since it uses less digits than its factorization.

49927986665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089.

The product of its digits is 352719360, while the sum is 71.

The spelling of 49927986665 in words is "forty-nine billion, nine hundred twenty-seven million, nine hundred eighty-six thousand, six hundred sixty-five".