11621556000709 has 2 divisors, whose sum is σ = 11621556000710. Its totient is φ = 11621556000708.

The previous prime is 11621556000623. The next prime is 11621556000713. The reversal of 11621556000709 is 90700065512611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11343322960225 + 278233040484 = 3367985^2 + 527478^2 .

It is an emirp because it is prime and its reverse (90700065512611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11621556000709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11621556000749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810778000354 + 5810778000355.

It is an arithmetic number, because the mean of its divisors is an integer number (5810778000355).

Almost surely, 2^{11621556000709} is an apocalyptic number.

It is an amenable number.

11621556000709 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621556000709 is an equidigital number, since it uses as much as digits as its factorization.

11621556000709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 11621556000709 in words is "eleven trillion, six hundred twenty-one billion, five hundred fifty-six million, seven hundred nine", and thus it is an aban number.