11621051651105 has 16 divisors (see below), whose sum is σ = 15018056009040. Its totient is φ = 8581653070848.

The previous prime is 11621051651101. The next prime is 11621051651107. The reversal of 11621051651105 is 50115615012611.

It can be written as a sum of positive squares in 8 ways, for example, as 4242828769 + 11616808822336 = 65137^2 + 3408344^2 .

It is not a de Polignac number, because 11621051651105 - 2² = 11621051651101 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11621051651101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15685709 + ... + 16409861.

It is an arithmetic number, because the mean of its divisors is an integer number (938628500565).

Almost surely, 2^{11621051651105} is an apocalyptic number.

It is an amenable number.

11621051651105 is a deficient number, since it is larger than the sum of its proper divisors (3397004357935).

11621051651105 is a wasteful number, since it uses less digits than its factorization.

11621051651105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971060.

The product of its (nonzero) digits is 9000, while the sum is 35.

Adding to 11621051651105 its reverse (50115615012611), we get a palindrome (61736666663716).

The spelling of 11621051651105 in words is "eleven trillion, six hundred twenty-one billion, fifty-one million, six hundred fifty-one thousand, one hundred five".