1123257087473 has 2 divisors, whose sum is σ = 1123257087474. Its totient is φ = 1123257087472.

The previous prime is 1123257087467. The next prime is 1123257087487. The reversal of 1123257087473 is 3747807523211.

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., 642381411169 + 480875676304 = 801487^2 + 693452^2 .

It is an emirp because it is prime and its reverse (3747807523211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123257087473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123257084473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561628543736 + 561628543737.

It is an arithmetic number, because the mean of its divisors is an integer number (561628543737).

Almost surely, 2^{1123257087473} is an apocalyptic number.

It is an amenable number.

1123257087473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123257087473 is an equidigital number, since it uses as much as digits as its factorization.

1123257087473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 1123257087473 in words is "one trillion, one hundred twenty-three billion, two hundred fifty-seven million, eighty-seven thousand, four hundred seventy-three".