11091038597 has 2 divisors, whose sum is σ = 11091038598. Its totient is φ = 11091038596.

The previous prime is 11091038591. The next prime is 11091038611. The reversal of 11091038597 is 79583019011.

It is a Cunningham number, because it is equal to 105314²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11091038596 + 1 = 105314^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 11091038597 - 2¹² = 11091034501 is a prime.

It is a super-2 number, since 2×11091038597² (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 (11091038591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5545519298 + 5545519299.

It is an arithmetic number, because the mean of its divisors is an integer number (5545519299).

Almost surely, 2^11091038597 is an apocalyptic number.

It is an amenable number.

11091038597 is a deficient number, since it is larger than the sum of its proper divisors (1).

11091038597 is an equidigital number, since it uses as much as digits as its factorization.

11091038597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 11091038597 in words is "eleven billion, ninety-one million, thirty-eight thousand, five hundred ninety-seven".