26310134021 has 6 divisors (see below), whose sum is σ = 26558332710. Its totient is φ = 26064233576.

The previous prime is 26310134017. The next prime is 26310134041. The reversal of 26310134021 is 12043101362.

It can be written as a sum of positive squares in only one way, i.e., 25828989796 + 481144225 = 160714^2 + 21935^2 .

It is not a de Polignac number, because 26310134021 - 2² = 26310134017 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 (26310134041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137566 + ... + 1160463.

It is an arithmetic number, because the mean of its divisors is an integer number (4426388785).

Almost surely, 2^26310134021 is an apocalyptic number.

It is an amenable number.

26310134021 is a deficient number, since it is larger than the sum of its proper divisors (248198689).

26310134021 is an equidigital number, since it uses as much as digits as its factorization.

26310134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298243 (or 2298136 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 26310134021 its reverse (12043101362), we get a palindrome (38353235383).

The spelling of 26310134021 in words is "twenty-six billion, three hundred ten million, one hundred thirty-four thousand, twenty-one".