123277074857 has 2 divisors, whose sum is σ = 123277074858. Its totient is φ = 123277074856.

The previous prime is 123277074853. The next prime is 123277074901. The reversal of 123277074857 is 758470772321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64199397376 + 59077677481 = 253376^2 + 243059^2 .

It is a cyclic number.

It is not a de Polignac number, because 123277074857 - 2² = 123277074853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123277074799 and 123277074808.

It is not a weakly prime, because it can be changed into another prime (123277074853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61638537428 + 61638537429.

It is an arithmetic number, because the mean of its divisors is an integer number (61638537429).

Almost surely, 2^123277074857 is an apocalyptic number.

It is an amenable number.

123277074857 is a deficient number, since it is larger than the sum of its proper divisors (1).

123277074857 is an equidigital number, since it uses as much as digits as its factorization.

123277074857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4609920, while the sum is 53.

The spelling of 123277074857 in words is "one hundred twenty-three billion, two hundred seventy-seven million, seventy-four thousand, eight hundred fifty-seven".