26261755481 has 16 divisors (see below), whose sum is σ = 28648673088. Its totient is φ = 23928696000.

The previous prime is 26261755463. The next prime is 26261755523. The reversal of 26261755481 is 18455716262.

It is a cyclic number.

It is not a de Polignac number, because 26261755481 - 2³⁰ = 25188013657 is a prime.

It is a super-2 number, since 2×26261755481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26261755411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404390 + ... + 464816.

It is an arithmetic number, because the mean of its divisors is an integer number (1790542068).

Almost surely, 2^26261755481 is an apocalyptic number.

It is an amenable number.

26261755481 is a deficient number, since it is larger than the sum of its proper divisors (2386917607).

26261755481 is a wasteful number, since it uses less digits than its factorization.

26261755481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60872.

The product of its digits is 806400, while the sum is 47.

The spelling of 26261755481 in words is "twenty-six billion, two hundred sixty-one million, seven hundred fifty-five thousand, four hundred eighty-one".