49121186689 has 9 divisors (see below), whose sum is σ = 49373583969. Its totient is φ = 48870076500.

The previous prime is 49121186659. The next prime is 49121186693. The reversal of 49121186689 is 98668112194.

The square root of 49121186689 is 221633.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 49121186689 - 2¹⁷ = 49121055617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49121186659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 55629442 + ... + 55630324.

Almost surely, 2^49121186689 is an apocalyptic number.

49121186689 is the 221633-rd square number.

49121186689 is the 110817-th centered octagonal number.

It is an amenable number.

49121186689 is a deficient number, since it is larger than the sum of its proper divisors (252397280).

49121186689 is an frugal number, since it uses more digits than its factorization.

49121186689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 1134 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The spelling of 49121186689 in words is "forty-nine billion, one hundred twenty-one million, one hundred eighty-six thousand, six hundred eighty-nine".