526697671861 has 2 divisors, whose sum is σ = 526697671862. Its totient is φ = 526697671860.

The previous prime is 526697671793. The next prime is 526697671999. The reversal of 526697671861 is 168176796625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503949491236 + 22748180625 = 709894^2 + 150825^2 .

It is a cyclic number.

It is not a de Polignac number, because 526697671861 - 2²⁵ = 526664117429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 526697671793 and 526697671802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526697671261) 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 as a sum of consecutive naturals, namely, 263348835930 + 263348835931.

It is an arithmetic number, because the mean of its divisors is an integer number (263348835931).

Almost surely, 2^526697671861 is an apocalyptic number.

It is an amenable number.

526697671861 is a deficient number, since it is larger than the sum of its proper divisors (1).

526697671861 is an equidigital number, since it uses as much as digits as its factorization.

526697671861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45722880, while the sum is 64.

The spelling of 526697671861 in words is "five hundred twenty-six billion, six hundred ninety-seven million, six hundred seventy-one thousand, eight hundred sixty-one".