1145120555197 has 2 divisors, whose sum is σ = 1145120555198. Its totient is φ = 1145120555196.

The previous prime is 1145120555191. The next prime is 1145120555279. The reversal of 1145120555197 is 7915550215411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628007115961 + 517113439236 = 792469^2 + 719106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145120555197 is a prime.

It is a super-2 number, since 2×1145120555197² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145120555191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572560277598 + 572560277599.

It is an arithmetic number, because the mean of its divisors is an integer number (572560277599).

Almost surely, 2^{1145120555197} is an apocalyptic number.

It is an amenable number.

1145120555197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145120555197 is an equidigital number, since it uses as much as digits as its factorization.

1145120555197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315000, while the sum is 46.

The spelling of 1145120555197 in words is "one trillion, one hundred forty-five billion, one hundred twenty million, five hundred fifty-five thousand, one hundred ninety-seven".