85447440507 has 32 divisors (see below), whose sum is σ = 139667222016. Its totient is φ = 45724377600.

The previous prime is 85447440499. The next prime is 85447440523. The reversal of 85447440507 is 70504474458.

It is not a de Polignac number, because 85447440507 - 2³ = 85447440499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85447444507) 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 31 ways as a sum of consecutive naturals, for example, 4320094 + ... + 4339827.

It is an arithmetic number, because the mean of its divisors is an integer number (4364600688).

Almost surely, 2^85447440507 is an apocalyptic number.

85447440507 is a deficient number, since it is larger than the sum of its proper divisors (54219781509).

85447440507 is a wasteful number, since it uses less digits than its factorization.

85447440507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659971.

The product of its (nonzero) digits is 2508800, while the sum is 48.

The spelling of 85447440507 in words is "eighty-five billion, four hundred forty-seven million, four hundred forty thousand, five hundred seven".