85409386635 has 8 divisors (see below), whose sum is σ = 136655018640. Its totient is φ = 45551672864.

The previous prime is 85409386631. The next prime is 85409386679. The reversal of 85409386635 is 53668390458.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85409386635 - 2² = 85409386631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85409386631) 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 in 7 ways as a sum of consecutive naturals, for example, 2846979540 + ... + 2846979569.

It is an arithmetic number, because the mean of its divisors is an integer number (17081877330).

Almost surely, 2^85409386635 is an apocalyptic number.

85409386635 is a deficient number, since it is larger than the sum of its proper divisors (51245632005).

85409386635 is a wasteful number, since it uses less digits than its factorization.

85409386635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693959117.

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 85409386635 in words is "eighty-five billion, four hundred nine million, three hundred eighty-six thousand, six hundred thirty-five".