11291072437 has 2 divisors, whose sum is σ = 11291072438. Its totient is φ = 11291072436.

The previous prime is 11291072381. The next prime is 11291072453. The reversal of 11291072437 is 73427019211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6849383121 + 4441689316 = 82761^2 + 66646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11291072437 is a prime.

It is a super-2 number, since 2×11291072437² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11291072396 and 11291072405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11291072137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5645536218 + 5645536219.

It is an arithmetic number, because the mean of its divisors is an integer number (5645536219).

Almost surely, 2^11291072437 is an apocalyptic number.

It is an amenable number.

11291072437 is a deficient number, since it is larger than the sum of its proper divisors (1).

11291072437 is an equidigital number, since it uses as much as digits as its factorization.

11291072437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 11291072437 in words is "eleven billion, two hundred ninety-one million, seventy-two thousand, four hundred thirty-seven".