123896255993 has 2 divisors, whose sum is σ = 123896255994. Its totient is φ = 123896255992.

The previous prime is 123896255953. The next prime is 123896255999. The reversal of 123896255993 is 399552698321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113911650064 + 9984605929 = 337508^2 + 99923^2 .

It is a cyclic number.

It is not a de Polignac number, because 123896255993 - 2⁸ = 123896255737 is a prime.

It is not a weakly prime, because it can be changed into another prime (123896255999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61948127996 + 61948127997.

It is an arithmetic number, because the mean of its divisors is an integer number (61948127997).

Almost surely, 2^123896255993 is an apocalyptic number.

It is an amenable number.

123896255993 is a deficient number, since it is larger than the sum of its proper divisors (1).

123896255993 is an equidigital number, since it uses as much as digits as its factorization.

123896255993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31492800, while the sum is 62.

The spelling of 123896255993 in words is "one hundred twenty-three billion, eight hundred ninety-six million, two hundred fifty-five thousand, nine hundred ninety-three".