1245313420355 has 4 divisors (see below), whose sum is σ = 1494376104432. Its totient is φ = 996250736280.

The previous prime is 1245313420321. The next prime is 1245313420391. The reversal of 1245313420355 is 5530243135421.

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

It is a de Polignac number, because none of the positive numbers 2^k-1245313420355 is a prime.

It is a Duffinian 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, 124531342031 + ... + 124531342040.

It is an arithmetic number, because the mean of its divisors is an integer number (373594026108).

Almost surely, 2^{1245313420355} is an apocalyptic number.

1245313420355 is a deficient number, since it is larger than the sum of its proper divisors (249062684077).

1245313420355 is an equidigital number, since it uses as much as digits as its factorization.

1245313420355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249062684076.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 1245313420355 its reverse (5530243135421), we get a palindrome (6775556555776).

The spelling of 1245313420355 in words is "one trillion, two hundred forty-five billion, three hundred thirteen million, four hundred twenty thousand, three hundred fifty-five".