11651461284061 has 4 divisors (see below), whose sum is σ = 12336841359612. Its totient is φ = 10966081208512.

The previous prime is 11651461284059. The next prime is 11651461284157. The reversal of 11651461284061 is 16048216415611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10518313808025 + 1133147476036 = 3243195^2 + 1064494^2 .

It is a cyclic number.

It is not a de Polignac number, because 11651461284061 - 2¹ = 11651461284059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11651461384061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342690037750 + ... + 342690037783.

It is an arithmetic number, because the mean of its divisors is an integer number (3084210339903).

Almost surely, 2^{11651461284061} is an apocalyptic number.

It is an amenable number.

11651461284061 is a deficient number, since it is larger than the sum of its proper divisors (685380075551).

11651461284061 is an equidigital number, since it uses as much as digits as its factorization.

11651461284061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685380075550.

The product of its (nonzero) digits is 276480, while the sum is 46.

Adding to 11651461284061 its reverse (16048216415611), we get a palindrome (27699677699672).

The spelling of 11651461284061 in words is "eleven trillion, six hundred fifty-one billion, four hundred sixty-one million, two hundred eighty-four thousand, sixty-one".