85508775905 has 8 divisors (see below), whose sum is σ = 117269178432. Its totient is φ = 58634589168.

The previous prime is 85508775901. The next prime is 85508775923. The reversal of 85508775905 is 50957780558.

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 85508775905 - 2² = 85508775901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85508775901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221553907 + ... + 1221553976.

It is an arithmetic number, because the mean of its divisors is an integer number (14658647304).

Almost surely, 2^85508775905 is an apocalyptic number.

It is an amenable number.

85508775905 is a deficient number, since it is larger than the sum of its proper divisors (31760402527).

85508775905 is a wasteful number, since it uses less digits than its factorization.

85508775905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443107895.

The product of its (nonzero) digits is 17640000, while the sum is 59.

The spelling of 85508775905 in words is "eighty-five billion, five hundred eight million, seven hundred seventy-five thousand, nine hundred five".