85797070848 has 144 divisors (see below), whose sum is σ = 250586727300. Its totient is φ = 28277145600.

The previous prime is 85797070829. The next prime is 85797070873. The reversal of 85797070848 is 84807079758.

It can be written as a sum of positive squares in 2 ways, for example, as 85338768384 + 458302464 = 292128^2 + 21408^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×85797070848² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1614298 + ... + 1666598.

Almost surely, 2^85797070848 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 85797070848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125293363650).

85797070848 is an abundant number, since it is smaller than the sum of its proper divisors (164789656452).

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

85797070848 is a wasteful number, since it uses less digits than its factorization.

85797070848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52418 (or 52395 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 63.

The spelling of 85797070848 in words is "eighty-five billion, seven hundred ninety-seven million, seventy thousand, eight hundred forty-eight".