858850279061 has 2 divisors, whose sum is σ = 858850279062. Its totient is φ = 858850279060.

The previous prime is 858850278991. The next prime is 858850279081. The reversal of 858850279061 is 160972058858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744466980625 + 114383298436 = 862825^2 + 338206^2 .

It is a cyclic number.

It is not a de Polignac number, because 858850279061 - 2²⁶ = 858783170197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858850279081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429425139530 + 429425139531.

It is an arithmetic number, because the mean of its divisors is an integer number (429425139531).

Almost surely, 2^858850279061 is an apocalyptic number.

It is an amenable number.

858850279061 is a deficient number, since it is larger than the sum of its proper divisors (1).

858850279061 is an equidigital number, since it uses as much as digits as its factorization.

858850279061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 858850279061 in words is "eight hundred fifty-eight billion, eight hundred fifty million, two hundred seventy-nine thousand, sixty-one".