85072874284066 has 4 divisors (see below), whose sum is σ = 127609311426102. Its totient is φ = 42536437142032.

The previous prime is 85072874284063. The next prime is 85072874284109. The reversal of 85072874284066 is 66048247827058.

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., 69050698605625 + 16022175678441 = 8309675^2 + 4002771^2 .

It is a super-2 number, since 2×85072874284066² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85072874283992 and 85072874284010.

It is not an unprimeable number, because it can be changed into a prime (85072874284063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21268218571015 + ... + 21268218571018.

Almost surely, 2^{85072874284066} is an apocalyptic number.

85072874284066 is a deficient number, since it is larger than the sum of its proper divisors (42536437142036).

85072874284066 is a wasteful number, since it uses less digits than its factorization.

85072874284066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42536437142035.

The product of its (nonzero) digits is 289013760, while the sum is 67.

The spelling of 85072874284066 in words is "eighty-five trillion, seventy-two billion, eight hundred seventy-four million, two hundred eighty-four thousand, sixty-six".