85499050440 has 64 divisors (see below), whose sum is σ = 256946564160. Its totient is φ = 22759799040.

The previous prime is 85499050381. The next prime is 85499050463. The reversal of 85499050440 is 4405099458.

It is a super-2 number, since 2×85499050440² (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 85499050440.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 555379 + ... + 692418.

It is an arithmetic number, because the mean of its divisors is an integer number (4014790065).

Almost surely, 2^85499050440 is an apocalyptic number.

It is an amenable number.

85499050440 is an abundant number, since it is smaller than the sum of its proper divisors (171447513720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85499050440 is a wasteful number, since it uses less digits than its factorization.

85499050440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248382 (or 1248378 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 85499050440 in words is "eighty-five billion, four hundred ninety-nine million, fifty thousand, four hundred forty".