11178599797 has 2 divisors, whose sum is σ = 11178599798. Its totient is φ = 11178599796.

The previous prime is 11178599743. The next prime is 11178599807. The reversal of 11178599797 is 79799587111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10187672356 + 990927441 = 100934^2 + 31479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11178599797 is a prime.

It is a super-2 number, since 2×11178599797² (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 (11178596797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5589299898 + 5589299899.

It is an arithmetic number, because the mean of its divisors is an integer number (5589299899).

Almost surely, 2^11178599797 is an apocalyptic number.

It is an amenable number.

11178599797 is a deficient number, since it is larger than the sum of its proper divisors (1).

11178599797 is an equidigital number, since it uses as much as digits as its factorization.

11178599797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 64.

The spelling of 11178599797 in words is "eleven billion, one hundred seventy-eight million, five hundred ninety-nine thousand, seven hundred ninety-seven".