123395300557 has 12 divisors (see below), whose sum is σ = 133408001916. Its totient is φ = 114049558080.

The previous prime is 123395300521. The next prime is 123395300573. The reversal of 123395300557 is 755003593321.

It can be written as a sum of positive squares in 2 ways, for example, as 1891467081 + 121503833476 = 43491^2 + 348574^2 .

It is not a de Polignac number, because 123395300557 - 2¹⁹ = 123394776269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123395300507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4153678 + ... + 4183279.

It is an arithmetic number, because the mean of its divisors is an integer number (11117333493).

Almost surely, 2^123395300557 is an apocalyptic number.

It is an amenable number.

123395300557 is a deficient number, since it is larger than the sum of its proper divisors (10012701359).

123395300557 is an equidigital number, since it uses as much as digits as its factorization.

123395300557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337036 (or 8337017 counting only the distinct ones).

The product of its (nonzero) digits is 425250, while the sum is 43.

Adding to 123395300557 its reverse (755003593321), we get a palindrome (878398893878).

The spelling of 123395300557 in words is "one hundred twenty-three billion, three hundred ninety-five million, three hundred thousand, five hundred fifty-seven".