26651305061 has 2 divisors, whose sum is σ = 26651305062. Its totient is φ = 26651305060.

The previous prime is 26651304971. The next prime is 26651305069. The reversal of 26651305061 is 16050315662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23283708100 + 3367596961 = 152590^2 + 58031^2 .

It is a cyclic number.

It is not a de Polignac number, because 26651305061 - 2¹⁰ = 26651304037 is a prime.

It is a super-2 number, since 2×26651305061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26651305069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13325652530 + 13325652531.

It is an arithmetic number, because the mean of its divisors is an integer number (13325652531).

Almost surely, 2^26651305061 is an apocalyptic number.

It is an amenable number.

26651305061 is a deficient number, since it is larger than the sum of its proper divisors (1).

26651305061 is an equidigital number, since it uses as much as digits as its factorization.

26651305061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 26651305061 in words is "twenty-six billion, six hundred fifty-one million, three hundred five thousand, sixty-one".