85415042724 has 72 divisors (see below), whose sum is σ = 219984723840. Its totient is φ = 25774943040.

The previous prime is 85415042723. The next prime is 85415042759. The reversal of 85415042724 is 42724051458.

It is not an unprimeable number, because it can be changed into a prime (85415042723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223962 + ... + 470094.

Almost surely, 2^85415042724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85415042724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109992361920).

85415042724 is an abundant number, since it is smaller than the sum of its proper divisors (134569681116).

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

85415042724 is a wasteful number, since it uses less digits than its factorization.

85415042724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246401 (or 246388 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 42.

The spelling of 85415042724 in words is "eighty-five billion, four hundred fifteen million, forty-two thousand, seven hundred twenty-four".