123870854593 has 2 divisors, whose sum is σ = 123870854594. Its totient is φ = 123870854592.

The previous prime is 123870854581. The next prime is 123870854609. The reversal of 123870854593 is 395458078321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105372950544 + 18497904049 = 324612^2 + 136007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123870854593 is a prime.

It is not a weakly prime, because it can be changed into another prime (123870854573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61935427296 + 61935427297.

It is an arithmetic number, because the mean of its divisors is an integer number (61935427297).

Almost surely, 2^123870854593 is an apocalyptic number.

It is an amenable number.

123870854593 is a deficient number, since it is larger than the sum of its proper divisors (1).

123870854593 is an equidigital number, since it uses as much as digits as its factorization.

123870854593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 123870854593 in words is "one hundred twenty-three billion, eight hundred seventy million, eight hundred fifty-four thousand, five hundred ninety-three".