263030401265 has 8 divisors (see below), whose sum is σ = 334203333480. Its totient is φ = 198046419712.

The previous prime is 263030401261. The next prime is 263030401303. The reversal of 263030401265 is 562104030362.

It can be written as a sum of positive squares in 4 ways, for example, as 74249710144 + 188780691121 = 272488^2 + 434489^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 263030401265 - 2² = 263030401261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (263030401261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1547237570 + ... + 1547237739.

It is an arithmetic number, because the mean of its divisors is an integer number (41775416685).

Almost surely, 2^263030401265 is an apocalyptic number.

It is an amenable number.

263030401265 is a deficient number, since it is larger than the sum of its proper divisors (71172932215).

263030401265 is a wasteful number, since it uses less digits than its factorization.

263030401265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094475331.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 263030401265 in words is "two hundred sixty-three billion, thirty million, four hundred one thousand, two hundred sixty-five".