85486835890 has 16 divisors (see below), whose sum is σ = 153907943832. Its totient is φ = 34187703424.

The previous prime is 85486835867. The next prime is 85486835897. The reversal of 85486835890 is 9853868458.

It can be written as a sum of positive squares in 4 ways, for example, as 74845469241 + 10641366649 = 273579^2 + 103157^2 .

It is a super-2 number, since 2×85486835890² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85486835897) 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, 827659 + ... + 925198.

Almost surely, 2^85486835890 is an apocalyptic number.

85486835890 is a deficient number, since it is larger than the sum of its proper divisors (68421107942).

85486835890 is a wasteful number, since it uses less digits than its factorization.

85486835890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757741.

The product of its (nonzero) digits is 66355200, while the sum is 64.

The spelling of 85486835890 in words is "eighty-five billion, four hundred eighty-six million, eight hundred thirty-five thousand, eight hundred ninety".