26231240061 has 24 divisors (see below), whose sum is σ = 40814231640. Its totient is φ = 16138313856.

The previous prime is 26231240041. The next prime is 26231240089. The reversal of 26231240061 is 16004213262.

26231240061 is a `hidden beast` number, since 26 + 231 + 2 + 400 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1071252900 + 25159987161 = 32730^2 + 158619^2 .

It is not a de Polignac number, because 26231240061 - 2⁵ = 26231240029 is a prime.

It is a super-2 number, since 2×26231240061² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26231240011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 488955 + ... + 539943.

It is an arithmetic number, because the mean of its divisors is an integer number (1700592985).

Almost surely, 2^26231240061 is an apocalyptic number.

It is an amenable number.

26231240061 is a deficient number, since it is larger than the sum of its proper divisors (14582991579).

26231240061 is a wasteful number, since it uses less digits than its factorization.

26231240061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55405 (or 55402 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 26231240061 in words is "twenty-six billion, two hundred thirty-one million, two hundred forty thousand, sixty-one".