26481307653 has 12 divisors (see below), whose sum is σ = 38507496300. Its totient is φ = 17535719616.

The previous prime is 26481307651. The next prime is 26481307663. The reversal of 26481307653 is 35670318462.

26481307653 is a `hidden beast` number, since 26 + 481 + 30 + 76 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14500253889 + 11981053764 = 120417^2 + 109458^2 .

It is not a de Polignac number, because 26481307653 - 2¹ = 26481307651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26481307599 and 26481307608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26481307651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9872376 + ... + 9875057.

It is an arithmetic number, because the mean of its divisors is an integer number (3208958025).

Almost surely, 2^26481307653 is an apocalyptic number.

It is an amenable number.

26481307653 is a deficient number, since it is larger than the sum of its proper divisors (12026188647).

26481307653 is a wasteful number, since it uses less digits than its factorization.

26481307653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19747588 (or 19747585 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 26481307653 in words is "twenty-six billion, four hundred eighty-one million, three hundred seven thousand, six hundred fifty-three".