11554532500997 has 2 divisors, whose sum is σ = 11554532500998. Its totient is φ = 11554532500996.

The previous prime is 11554532500981. The next prime is 11554532501087. The reversal of 11554532500997 is 79900523545511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11550747052321 + 3785448676 = 3398639^2 + 61526^2 .

It is an emirp because it is prime and its reverse (79900523545511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11554532500997 - 2⁴ = 11554532500981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11554532500097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777266250498 + 5777266250499.

It is an arithmetic number, because the mean of its divisors is an integer number (5777266250499).

Almost surely, 2^{11554532500997} is an apocalyptic number.

It is an amenable number.

11554532500997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554532500997 is an equidigital number, since it uses as much as digits as its factorization.

11554532500997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505000, while the sum is 56.

The spelling of 11554532500997 in words is "eleven trillion, five hundred fifty-four billion, five hundred thirty-two million, five hundred thousand, nine hundred ninety-seven".