85345638770 has 24 divisors (see below), whose sum is σ = 178703318124. Its totient is φ = 29261361696.

The previous prime is 85345638761. The next prime is 85345638793. The reversal of 85345638770 is 7783654358.

It can be written as a sum of positive squares in 2 ways, for example, as 83890750321 + 1454888449 = 289639^2 + 38143^2 .

It is a super-2 number, since 2×85345638770² (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, 87086897 + ... + 87087876.

Almost surely, 2^85345638770 is an apocalyptic number.

85345638770 is an abundant number, since it is smaller than the sum of its proper divisors (93357679354).

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

85345638770 is a wasteful number, since it uses less digits than its factorization.

85345638770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174174794 (or 174174787 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 85345638770 in words is "eighty-five billion, three hundred forty-five million, six hundred thirty-eight thousand, seven hundred seventy".