123797889577 has 2 divisors, whose sum is σ = 123797889578. Its totient is φ = 123797889576.

The previous prime is 123797889571. The next prime is 123797889629. The reversal of 123797889577 is 775988797321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99181534761 + 24616354816 = 314931^2 + 156896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123797889577 is a prime.

It is not a weakly prime, because it can be changed into another prime (123797889571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61898944788 + 61898944789.

It is an arithmetic number, because the mean of its divisors is an integer number (61898944789).

Almost surely, 2^123797889577 is an apocalyptic number.

It is an amenable number.

123797889577 is a deficient number, since it is larger than the sum of its proper divisors (1).

123797889577 is an equidigital number, since it uses as much as digits as its factorization.

123797889577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373403520, while the sum is 73.

The spelling of 123797889577 in words is "one hundred twenty-three billion, seven hundred ninety-seven million, eight hundred eighty-nine thousand, five hundred seventy-seven".