11528445437 has 2 divisors, whose sum is σ = 11528445438. Its totient is φ = 11528445436.

The previous prime is 11528445407. The next prime is 11528445463. The reversal of 11528445437 is 73454482511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9929325316 + 1599120121 = 99646^2 + 39989^2 .

It is a cyclic number.

It is not a de Polignac number, because 11528445437 - 2⁶ = 11528445373 is a prime.

It is a super-2 number, since 2×11528445437² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11528445407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5764222718 + 5764222719.

It is an arithmetic number, because the mean of its divisors is an integer number (5764222719).

Almost surely, 2^11528445437 is an apocalyptic number.

It is an amenable number.

11528445437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11528445437 is an equidigital number, since it uses as much as digits as its factorization.

11528445437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 44.

The spelling of 11528445437 in words is "eleven billion, five hundred twenty-eight million, four hundred forty-five thousand, four hundred thirty-seven".