1245403544545 has 8 divisors (see below), whose sum is σ = 1494670902120. Its totient is φ = 996198403200.

The previous prime is 1245403544501. The next prime is 1245403544591. The reversal of 1245403544545 is 5454453045421.

It can be written as a sum of positive squares in 4 ways, for example, as 588032849889 + 657370694656 = 766833^2 + 810784^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1245403544545 - 2⁷ = 1245403544417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245403544495 and 1245403544504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15510006 + ... + 15590095.

It is an arithmetic number, because the mean of its divisors is an integer number (186833862765).

Almost surely, 2^{1245403544545} is an apocalyptic number.

It is an amenable number.

1245403544545 is a deficient number, since it is larger than the sum of its proper divisors (249267357575).

1245403544545 is an equidigital number, since it uses as much as digits as its factorization.

1245403544545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31108115.

The product of its (nonzero) digits is 3840000, while the sum is 46.

Adding to 1245403544545 its reverse (5454453045421), we get a palindrome (6699856589966).

The spelling of 1245403544545 in words is "one trillion, two hundred forty-five billion, four hundred three million, five hundred forty-four thousand, five hundred forty-five".