11641603517 has 2 divisors, whose sum is σ = 11641603518. Its totient is φ = 11641603516.

The previous prime is 11641603481. The next prime is 11641603579. The reversal of 11641603517 is 71530614611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11579051236 + 62552281 = 107606^2 + 7909^2 .

It is a cyclic number.

It is not a de Polignac number, because 11641603517 - 2⁸ = 11641603261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11641603217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820801758 + 5820801759.

It is an arithmetic number, because the mean of its divisors is an integer number (5820801759).

Almost surely, 2^11641603517 is an apocalyptic number.

It is an amenable number.

11641603517 is a deficient number, since it is larger than the sum of its proper divisors (1).

11641603517 is an equidigital number, since it uses as much as digits as its factorization.

11641603517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 11641603517 in words is "eleven billion, six hundred forty-one million, six hundred three thousand, five hundred seventeen".