11523431653 has 2 divisors, whose sum is σ = 11523431654. Its totient is φ = 11523431652.

The previous prime is 11523431651. The next prime is 11523431671. The reversal of 11523431653 is 35613432511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7761081409 + 3762350244 = 88097^2 + 61338^2 .

It is a cyclic number.

It is not a de Polignac number, because 11523431653 - 2¹ = 11523431651 is a prime.

It is a super-2 number, since 2×11523431653² (a number of 21 digits) contains 22 as substring.

Together with 11523431651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11523431651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5761715826 + 5761715827.

It is an arithmetic number, because the mean of its divisors is an integer number (5761715827).

Almost surely, 2^11523431653 is an apocalyptic number.

It is an amenable number.

11523431653 is a deficient number, since it is larger than the sum of its proper divisors (1).

11523431653 is an equidigital number, since it uses as much as digits as its factorization.

11523431653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The spelling of 11523431653 in words is "eleven billion, five hundred twenty-three million, four hundred thirty-one thousand, six hundred fifty-three".