147199949569 has 2 divisors, whose sum is σ = 147199949570. Its totient is φ = 147199949568.

The previous prime is 147199949549. The next prime is 147199949581. The reversal of 147199949569 is 965949991741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78234887025 + 68965062544 = 279705^2 + 262612^2 .

It is a cyclic number.

It is not a de Polignac number, because 147199949569 - 2²³ = 147191560961 is a prime.

It is a super-2 number, since 2×147199949569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (147199949549) 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 as a sum of consecutive naturals, namely, 73599974784 + 73599974785.

It is an arithmetic number, because the mean of its divisors is an integer number (73599974785).

Almost surely, 2^147199949569 is an apocalyptic number.

It is an amenable number.

147199949569 is a deficient number, since it is larger than the sum of its proper divisors (1).

147199949569 is an equidigital number, since it uses as much as digits as its factorization.

147199949569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 198404640, while the sum is 73.

The spelling of 147199949569 in words is "one hundred forty-seven billion, one hundred ninety-nine million, nine hundred forty-nine thousand, five hundred sixty-nine".