11520344520551 has 2 divisors, whose sum is σ = 11520344520552. Its totient is φ = 11520344520550.

The previous prime is 11520344520499. The next prime is 11520344520571. The reversal of 11520344520551 is 15502544302511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11520344520551 - 2¹⁸ = 11520344258407 is a prime.

It is a super-2 number, since 2×11520344520551² (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 (11520344520571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760172260275 + 5760172260276.

It is an arithmetic number, because the mean of its divisors is an integer number (5760172260276).

Almost surely, 2^{11520344520551} is an apocalyptic number.

11520344520551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520344520551 is an equidigital number, since it uses as much as digits as its factorization.

11520344520551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 11520344520551 in words is "eleven trillion, five hundred twenty billion, three hundred forty-four million, five hundred twenty thousand, five hundred fifty-one".