979056066581 has 2 divisors, whose sum is σ = 979056066582. Its totient is φ = 979056066580.

The previous prime is 979056066517. The next prime is 979056066617. The reversal of 979056066581 is 185660650979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978308919025 + 747147556 = 989095^2 + 27334^2 .

It is a cyclic number.

It is not a de Polignac number, because 979056066581 - 2⁶ = 979056066517 is a prime.

It is a super-2 number, since 2×979056066581² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979056060581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489528033290 + 489528033291.

It is an arithmetic number, because the mean of its divisors is an integer number (489528033291).

Almost surely, 2^979056066581 is an apocalyptic number.

It is an amenable number.

979056066581 is a deficient number, since it is larger than the sum of its proper divisors (1).

979056066581 is an equidigital number, since it uses as much as digits as its factorization.

979056066581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24494400, while the sum is 62.

The spelling of 979056066581 in words is "nine hundred seventy-nine billion, fifty-six million, sixty-six thousand, five hundred eighty-one".