85649702659 has 2 divisors, whose sum is σ = 85649702660. Its totient is φ = 85649702658.

The previous prime is 85649702647. The next prime is 85649702687. The reversal of 85649702659 is 95620794658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85649702659 - 2⁵ = 85649702627 is a prime.

It is a super-2 number, since 2×85649702659² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85649702597 and 85649702606.

It is not a weakly prime, because it can be changed into another prime (85649702689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42824851329 + 42824851330.

It is an arithmetic number, because the mean of its divisors is an integer number (42824851330).

Almost surely, 2^85649702659 is an apocalyptic number.

85649702659 is a deficient number, since it is larger than the sum of its proper divisors (1).

85649702659 is an equidigital number, since it uses as much as digits as its factorization.

85649702659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 61.

The spelling of 85649702659 in words is "eighty-five billion, six hundred forty-nine million, seven hundred two thousand, six hundred fifty-nine".