11697521503 has 2 divisors, whose sum is σ = 11697521504. Its totient is φ = 11697521502.

The previous prime is 11697521497. The next prime is 11697521531. The reversal of 11697521503 is 30512579611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11697521503 - 2¹⁷ = 11697390431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11697521903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5848760751 + 5848760752.

It is an arithmetic number, because the mean of its divisors is an integer number (5848760752).

Almost surely, 2^11697521503 is an apocalyptic number.

11697521503 is a deficient number, since it is larger than the sum of its proper divisors (1).

11697521503 is an equidigital number, since it uses as much as digits as its factorization.

11697521503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 40.

The spelling of 11697521503 in words is "eleven billion, six hundred ninety-seven million, five hundred twenty-one thousand, five hundred three".