11922791047 has 2 divisors, whose sum is σ = 11922791048. Its totient is φ = 11922791046.

The previous prime is 11922791039. The next prime is 11922791057. The reversal of 11922791047 is 74019722911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11922791047 - 2³ = 11922791039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11922790994 and 11922791012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11922791017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5961395523 + 5961395524.

It is an arithmetic number, because the mean of its divisors is an integer number (5961395524).

Almost surely, 2^11922791047 is an apocalyptic number.

11922791047 is a deficient number, since it is larger than the sum of its proper divisors (1).

11922791047 is an equidigital number, since it uses as much as digits as its factorization.

11922791047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 11922791047 in words is "eleven billion, nine hundred twenty-two million, seven hundred ninety-one thousand, forty-seven".