148785998593 has 4 divisors (see below), whose sum is σ = 149207489028. Its totient is φ = 148364508160.

The previous prime is 148785998579. The next prime is 148785998623. The reversal of 148785998593 is 395899587841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26727999169 + 122057999424 = 163487^2 + 349368^2 .

It is a cyclic number.

It is not a de Polignac number, because 148785998593 - 2¹³ = 148785990401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148785998533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210744688 + ... + 210745393.

It is an arithmetic number, because the mean of its divisors is an integer number (37301872257).

Almost surely, 2^148785998593 is an apocalyptic number.

It is an amenable number.

148785998593 is a deficient number, since it is larger than the sum of its proper divisors (421490435).

148785998593 is an equidigital number, since it uses as much as digits as its factorization.

148785998593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421490434.

The product of its digits is 783820800, while the sum is 76.

The spelling of 148785998593 in words is "one hundred forty-eight billion, seven hundred eighty-five million, nine hundred ninety-eight thousand, five hundred ninety-three".