85238860066 has 4 divisors (see below), whose sum is σ = 127858290102. Its totient is φ = 42619430032.

The previous prime is 85238860061. The next prime is 85238860079. The reversal of 85238860066 is 66006883258.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66587222025 + 18651638041 = 258045^2 + 136571^2 .

It is a super-2 number, since 2×85238860066² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85238859995 and 85238860022.

It is not an unprimeable number, because it can be changed into a prime (85238860061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21309715015 + ... + 21309715018.

Almost surely, 2^85238860066 is an apocalyptic number.

85238860066 is a deficient number, since it is larger than the sum of its proper divisors (42619430036).

85238860066 is a wasteful number, since it uses less digits than its factorization.

85238860066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42619430035.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 85238860066 in words is "eighty-five billion, two hundred thirty-eight million, eight hundred sixty thousand, sixty-six".