85765222448 has 40 divisors (see below), whose sum is σ = 167299292160. Its totient is φ = 42591813120.

The previous prime is 85765222429. The next prime is 85765222481. The reversal of 85765222448 is 84422256758.

It is a Cunningham number, because it is equal to 292857²-1.

It is a super-2 number, since 2×85765222448² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85765222448.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2324561 + ... + 2361167.

It is an arithmetic number, because the mean of its divisors is an integer number (4182482304).

Almost surely, 2^85765222448 is an apocalyptic number.

It is an amenable number.

85765222448 is a deficient number, since it is larger than the sum of its proper divisors (81534069712).

85765222448 is a wasteful number, since it uses less digits than its factorization.

85765222448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37605 (or 37599 counting only the distinct ones).

The product of its digits is 8601600, while the sum is 53.

The spelling of 85765222448 in words is "eighty-five billion, seven hundred sixty-five million, two hundred twenty-two thousand, four hundred forty-eight".