148138772569 has 2 divisors, whose sum is σ = 148138772570. Its totient is φ = 148138772568.

The previous prime is 148138772539. The next prime is 148138772597. The reversal of 148138772569 is 965277831841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148138772544 + 25 = 384888^2 + 5^2 .

It is an emirp because it is prime and its reverse (965277831841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148138772569 - 2⁹ = 148138772057 is a prime.

It is a super-2 number, since 2×148138772569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (148138772539) 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, 74069386284 + 74069386285.

It is an arithmetic number, because the mean of its divisors is an integer number (74069386285).

Almost surely, 2^148138772569 is an apocalyptic number.

It is an amenable number.

148138772569 is a deficient number, since it is larger than the sum of its proper divisors (1).

148138772569 is an equidigital number, since it uses as much as digits as its factorization.

148138772569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 61.

The spelling of 148138772569 in words is "one hundred forty-eight billion, one hundred thirty-eight million, seven hundred seventy-two thousand, five hundred sixty-nine".