11451134335621 has 2 divisors, whose sum is σ = 11451134335622. Its totient is φ = 11451134335620.

The previous prime is 11451134335607. The next prime is 11451134335651. The reversal of 11451134335621 is 12653343115411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7745840428225 + 3705293907396 = 2783135^2 + 1924914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11451134335621 is a prime.

It is a super-2 number, since 2×11451134335621² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11451134335651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5725567167810 + 5725567167811.

It is an arithmetic number, because the mean of its divisors is an integer number (5725567167811).

Almost surely, 2^{11451134335621} is an apocalyptic number.

It is an amenable number.

11451134335621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11451134335621 is an equidigital number, since it uses as much as digits as its factorization.

11451134335621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The spelling of 11451134335621 in words is "eleven trillion, four hundred fifty-one billion, one hundred thirty-four million, three hundred thirty-five thousand, six hundred twenty-one".