85518229226 has 4 divisors (see below), whose sum is σ = 128277343842. Its totient is φ = 42759114612.

The previous prime is 85518229211. The next prime is 85518229231. The reversal of 85518229226 is 62292281558.

It is a Cunningham number, because it is equal to 292435²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 85518229225 + 1 = 292435^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21379557305 + ... + 21379557308.

Almost surely, 2^85518229226 is an apocalyptic number.

85518229226 is a deficient number, since it is larger than the sum of its proper divisors (42759114616).

85518229226 is a wasteful number, since it uses less digits than its factorization.

85518229226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42759114615.

The product of its digits is 1382400, while the sum is 50.

The spelling of 85518229226 in words is "eighty-five billion, five hundred eighteen million, two hundred twenty-nine thousand, two hundred twenty-six".