526405842461 has 2 divisors, whose sum is σ = 526405842462. Its totient is φ = 526405842460.

The previous prime is 526405842451. The next prime is 526405842509. The reversal of 526405842461 is 164248504625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 522756474361 + 3649368100 = 723019^2 + 60410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-526405842461 is a prime.

It is a super-2 number, since 2×526405842461² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526405842451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263202921230 + 263202921231.

It is an arithmetic number, because the mean of its divisors is an integer number (263202921231).

Almost surely, 2^526405842461 is an apocalyptic number.

It is an amenable number.

526405842461 is a deficient number, since it is larger than the sum of its proper divisors (1).

526405842461 is an equidigital number, since it uses as much as digits as its factorization.

526405842461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 526405842461 in words is "five hundred twenty-six billion, four hundred five million, eight hundred forty-two thousand, four hundred sixty-one".