11523541501 has 2 divisors, whose sum is σ = 11523541502. Its totient is φ = 11523541500.

The previous prime is 11523541493. The next prime is 11523541543. The reversal of 11523541501 is 10514532511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10935721476 + 587820025 = 104574^2 + 24245^2 .

It is a cyclic number.

It is not a de Polignac number, because 11523541501 - 2³ = 11523541493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11523541501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11523547501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5761770750 + 5761770751.

It is an arithmetic number, because the mean of its divisors is an integer number (5761770751).

Almost surely, 2^11523541501 is an apocalyptic number.

It is an amenable number.

11523541501 is a deficient number, since it is larger than the sum of its proper divisors (1).

11523541501 is an equidigital number, since it uses as much as digits as its factorization.

11523541501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 11523541501 in words is "eleven billion, five hundred twenty-three million, five hundred forty-one thousand, five hundred one".