1316520505263 has 8 divisors (see below), whose sum is σ = 1755367431808. Its totient is φ = 877676957784.

The previous prime is 1316520505259. The next prime is 1316520505277. The reversal of 1316520505263 is 3625050256131.

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

It is not a de Polignac number, because 1316520505263 - 2² = 1316520505259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316520509263) 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, 277206 + ... + 1646172.

It is an arithmetic number, because the mean of its divisors is an integer number (219420928976).

Almost surely, 2^{1316520505263} is an apocalyptic number.

1316520505263 is a deficient number, since it is larger than the sum of its proper divisors (438846926545).

1316520505263 is a wasteful number, since it uses less digits than its factorization.

1316520505263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689533.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 1316520505263 in words is "one trillion, three hundred sixteen billion, five hundred twenty million, five hundred five thousand, two hundred sixty-three".