1145666620445 has 4 divisors (see below), whose sum is σ = 1374799944540. Its totient is φ = 916533296352.

The previous prime is 1145666620433. The next prime is 1145666620471. The reversal of 1145666620445 is 5440266665411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359090974564 + 786575645881 = 599242^2 + 886891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145666620445 - 2³⁰ = 1144592878621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145666620393 and 1145666620402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114566662040 + ... + 114566662049.

It is an arithmetic number, because the mean of its divisors is an integer number (343699986135).

Almost surely, 2^{1145666620445} is an apocalyptic number.

It is an amenable number.

1145666620445 is a deficient number, since it is larger than the sum of its proper divisors (229133324095).

1145666620445 is an equidigital number, since it uses as much as digits as its factorization.

1145666620445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229133324094.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 1145666620445 in words is "one trillion, one hundred forty-five billion, six hundred sixty-six million, six hundred twenty thousand, four hundred forty-five".