1125398703973 has 2 divisors, whose sum is σ = 1125398703974. Its totient is φ = 1125398703972.

The previous prime is 1125398703893. The next prime is 1125398703977. The reversal of 1125398703973 is 3793078935211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1069720638529 + 55678065444 = 1034273^2 + 235962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125398703973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125398703977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562699351986 + 562699351987.

It is an arithmetic number, because the mean of its divisors is an integer number (562699351987).

Almost surely, 2^{1125398703973} is an apocalyptic number.

It is an amenable number.

1125398703973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125398703973 is an equidigital number, since it uses as much as digits as its factorization.

1125398703973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 1125398703973 in words is "one trillion, one hundred twenty-five billion, three hundred ninety-eight million, seven hundred three thousand, nine hundred seventy-three".