11978932247 has 2 divisors, whose sum is σ = 11978932248. Its totient is φ = 11978932246.

The previous prime is 11978932219. The next prime is 11978932267. The reversal of 11978932247 is 74223987911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11978932247 - 2³⁰ = 10905190423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11978932267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5989466123 + 5989466124.

It is an arithmetic number, because the mean of its divisors is an integer number (5989466124).

Almost surely, 2^11978932247 is an apocalyptic number.

11978932247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11978932247 is an equidigital number, since it uses as much as digits as its factorization.

11978932247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The spelling of 11978932247 in words is "eleven billion, nine hundred seventy-eight million, nine hundred thirty-two thousand, two hundred forty-seven".