263116444461397 has 4 divisors (see below), whose sum is σ = 267576045215040. Its totient is φ = 258656843707756.

The previous prime is 263116444461373. The next prime is 263116444461433. The reversal of 263116444461397 is 793164444611362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263116444461397 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 (263116444161397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229800376733 + ... + 2229800376850.

It is an arithmetic number, because the mean of its divisors is an integer number (66894011303760).

Almost surely, 2^{263116444461397} is an apocalyptic number.

It is an amenable number.

263116444461397 is a deficient number, since it is larger than the sum of its proper divisors (4459600753643).

263116444461397 is an equidigital number, since it uses as much as digits as its factorization.

263116444461397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459600753642.

The product of its digits is 62705664, while the sum is 61.

The spelling of 263116444461397 in words is "two hundred sixty-three trillion, one hundred sixteen billion, four hundred forty-four million, four hundred sixty-one thousand, three hundred ninety-seven".