49684890660001 has 9 divisors (see below), whose sum is σ = 49722637175859. Its totient is φ = 49647172793400.

The previous prime is 49684890659927. The next prime is 49684890660061. The reversal of 49684890660001 is 10006609848694.

The square root of 49684890660001 is 7048751.

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

It can be written as a sum of positive squares in only one way, i.e., 32419369827601 + 17265520832400 = 5693801^2 + 4155180^2 .

It is not a de Polignac number, because 49684890660001 - 2⁹ = 49684890659489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49684890660061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16501124586 + ... + 16501127596.

Almost surely, 2^{49684890660001} is an apocalyptic number.

49684890660001 is the 7048751-st square number.

49684890660001 is the 3524376-th centered octagonal number.

It is an amenable number.

49684890660001 is a deficient number, since it is larger than the sum of its proper divisors (37746515858).

49684890660001 is an frugal number, since it uses more digits than its factorization.

49684890660001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704 (or 5352 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 49684890660001 in words is "forty-nine trillion, six hundred eighty-four billion, eight hundred ninety million, six hundred sixty thousand, one".