26863475357 has 4 divisors (see below), whose sum is σ = 26871548220. Its totient is φ = 26855402496.

The previous prime is 26863475323. The next prime is 26863475389. The reversal of 26863475357 is 75357436862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75357436862 = 2 ⋅37678718431.

It can be written as a sum of positive squares in 2 ways, for example, as 11885142361 + 14978332996 = 109019^2 + 122386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26863475357 is a prime.

It is a super-2 number, since 2×26863475357² (a number of 22 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 (26863475857) 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, 4031438 + ... + 4038095.

It is an arithmetic number, because the mean of its divisors is an integer number (6717887055).

Almost surely, 2^26863475357 is an apocalyptic number.

It is an amenable number.

26863475357 is a deficient number, since it is larger than the sum of its proper divisors (8072863).

26863475357 is an equidigital number, since it uses as much as digits as its factorization.

26863475357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8072862.

The product of its digits is 25401600, while the sum is 56.

The spelling of 26863475357 in words is "twenty-six billion, eight hundred sixty-three million, four hundred seventy-five thousand, three hundred fifty-seven".