47228977151989 has 2 divisors, whose sum is σ = 47228977151990. Its totient is φ = 47228977151988.

The previous prime is 47228977151953. The next prime is 47228977152011. The reversal of 47228977151989 is 98915177982274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23988768095889 + 23240209056100 = 4897833^2 + 4820810^2 .

It is a cyclic number.

It is not a de Polignac number, because 47228977151989 - 2¹³ = 47228977143797 is a prime.

It is a super-2 number, since 2×47228977151989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47228977151189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23614488575994 + 23614488575995.

It is an arithmetic number, because the mean of its divisors is an integer number (23614488575995).

Almost surely, 2^{47228977151989} is an apocalyptic number.

It is an amenable number.

47228977151989 is a deficient number, since it is larger than the sum of its proper divisors (1).

47228977151989 is an equidigital number, since it uses as much as digits as its factorization.

47228977151989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280240640, while the sum is 79.

The spelling of 47228977151989 in words is "forty-seven trillion, two hundred twenty-eight billion, nine hundred seventy-seven million, one hundred fifty-one thousand, nine hundred eighty-nine".