11551772047 has 2 divisors, whose sum is σ = 11551772048. Its totient is φ = 11551772046.

The previous prime is 11551772041. The next prime is 11551772059. The reversal of 11551772047 is 74027715511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11551772047 - 2¹⁹ = 11551247759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11551772041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775886023 + 5775886024.

It is an arithmetic number, because the mean of its divisors is an integer number (5775886024).

Almost surely, 2^11551772047 is an apocalyptic number.

11551772047 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551772047 is an equidigital number, since it uses as much as digits as its factorization.

11551772047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68600, while the sum is 40.

The spelling of 11551772047 in words is "eleven billion, five hundred fifty-one million, seven hundred seventy-two thousand, forty-seven".