11515151213603 has 2 divisors, whose sum is σ = 11515151213604. Its totient is φ = 11515151213602.

The previous prime is 11515151213557. The next prime is 11515151213611. The reversal of 11515151213603 is 30631215151511.

It is a happy number.

11515151213603 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11515151213603 - 2¹⁴ = 11515151197219 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11515151213623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757575606801 + 5757575606802.

It is an arithmetic number, because the mean of its divisors is an integer number (5757575606802).

Almost surely, 2^{11515151213603} is an apocalyptic number.

11515151213603 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515151213603 is an equidigital number, since it uses as much as digits as its factorization.

11515151213603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 11515151213603 in words is "eleven trillion, five hundred fifteen billion, one hundred fifty-one million, two hundred thirteen thousand, six hundred three".