11917603797 has 32 divisors (see below), whose sum is σ = 17708875776. Its totient is φ = 7067611200.

The previous prime is 11917603787. The next prime is 11917603807. The reversal of 11917603797 is 79730671911.

11917603797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11917603787) and next prime (11917603807).

It is not a de Polignac number, because 11917603797 - 2⁷ = 11917603669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11917603717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660972 + ... + 678762.

It is an arithmetic number, because the mean of its divisors is an integer number (553402368).

Almost surely, 2^11917603797 is an apocalyptic number.

It is an amenable number.

11917603797 is a deficient number, since it is larger than the sum of its proper divisors (5791271979).

11917603797 is a wasteful number, since it uses less digits than its factorization.

11917603797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18241.

The product of its (nonzero) digits is 500094, while the sum is 51.

The spelling of 11917603797 in words is "eleven billion, nine hundred seventeen million, six hundred three thousand, seven hundred ninety-seven".