1351561306245 has 8 divisors (see below), whose sum is σ = 2162498090016. Its totient is φ = 720832696656.

The previous prime is 1351561306243. The next prime is 1351561306297. The reversal of 1351561306245 is 5426031651531.

It is a happy number.

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

It is not a de Polignac number, because 1351561306245 - 2¹ = 1351561306243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1351561306197 and 1351561306206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351561306243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45052043527 + ... + 45052043556.

It is an arithmetic number, because the mean of its divisors is an integer number (270312261252).

Almost surely, 2^{1351561306245} is an apocalyptic number.

1351561306245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1351561306245 is a deficient number, since it is larger than the sum of its proper divisors (810936783771).

1351561306245 is an equidigital number, since it uses as much as digits as its factorization.

1351561306245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90104087091.

The product of its (nonzero) digits is 324000, while the sum is 42.

Adding to 1351561306245 its reverse (5426031651531), we get a palindrome (6777592957776).

The spelling of 1351561306245 in words is "one trillion, three hundred fifty-one billion, five hundred sixty-one million, three hundred six thousand, two hundred forty-five".