85745424939 has 8 divisors (see below), whose sum is σ = 118269551760. Its totient is φ = 55192457376.

The previous prime is 85745424923. The next prime is 85745424943. The reversal of 85745424939 is 93942454758.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85745424939 - 2⁴ = 85745424923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85745424139) 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, 492789712 + ... + 492789885.

It is an arithmetic number, because the mean of its divisors is an integer number (14783693970).

Almost surely, 2^85745424939 is an apocalyptic number.

85745424939 is a deficient number, since it is larger than the sum of its proper divisors (32524126821).

85745424939 is a wasteful number, since it uses less digits than its factorization.

85745424939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985579629.

The product of its digits is 43545600, while the sum is 60.

The spelling of 85745424939 in words is "eighty-five billion, seven hundred forty-five million, four hundred twenty-four thousand, nine hundred thirty-nine".