1263450245583 has 8 divisors (see below), whose sum is σ = 1684605566896. Its totient is φ = 842297544000.

The previous prime is 1263450245573. The next prime is 1263450245597. The reversal of 1263450245583 is 3855420543621.

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

It is not a de Polignac number, because 1263450245583 - 2²² = 1263446051279 is a prime.

It is a super-2 number, since 2×1263450245583² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263450245573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328523 + ... + 2071683.

It is an arithmetic number, because the mean of its divisors is an integer number (210575695862).

Almost surely, 2^{1263450245583} is an apocalyptic number.

1263450245583 is a deficient number, since it is larger than the sum of its proper divisors (421155321313).

1263450245583 is an equidigital number, since it uses as much as digits as its factorization.

1263450245583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309865.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 1263450245583 in words is "one trillion, two hundred sixty-three billion, four hundred fifty million, two hundred forty-five thousand, five hundred eighty-three".