1265553300345 has 16 divisors (see below), whose sum is σ = 2143996179840. Its totient is φ = 635258127104.

The previous prime is 1265553300307. The next prime is 1265553300409. The reversal of 1265553300345 is 5430033555621.

It is a cyclic number.

It is not a de Polignac number, because 1265553300345 - 2⁶ = 1265553300281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265553300297 and 1265553300306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2481476805 + ... + 2481477314.

It is an arithmetic number, because the mean of its divisors is an integer number (133999761240).

Almost surely, 2^{1265553300345} is an apocalyptic number.

1265553300345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1265553300345 is a deficient number, since it is larger than the sum of its proper divisors (878442879495).

1265553300345 is a wasteful number, since it uses less digits than its factorization.

1265553300345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962954144.

The product of its (nonzero) digits is 810000, while the sum is 42.

Adding to 1265553300345 its reverse (5430033555621), we get a palindrome (6695586855966).

The spelling of 1265553300345 in words is "one trillion, two hundred sixty-five billion, five hundred fifty-three million, three hundred thousand, three hundred forty-five".