1009477586861 has 2 divisors, whose sum is σ = 1009477586862. Its totient is φ = 1009477586860.

The previous prime is 1009477586827. The next prime is 1009477586867. The reversal of 1009477586861 is 1686857749001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007634516100 + 1843070761 = 1003810^2 + 42931^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009477586861 - 2⁶ = 1009477586797 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1009477586794 and 1009477586803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009477586867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504738793430 + 504738793431.

It is an arithmetic number, because the mean of its divisors is an integer number (504738793431).

Almost surely, 2^{1009477586861} is an apocalyptic number.

It is an amenable number.

1009477586861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009477586861 is an equidigital number, since it uses as much as digits as its factorization.

1009477586861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 1009477586861 in words is "one trillion, nine billion, four hundred seventy-seven million, five hundred eighty-six thousand, eight hundred sixty-one".