85165167772 has 6 divisors (see below), whose sum is σ = 149039043608. Its totient is φ = 42582583884.

The previous prime is 85165167757. The next prime is 85165167781. The reversal of 85165167772 is 27776156158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10645645968 + ... + 10645645975.

Almost surely, 2^85165167772 is an apocalyptic number.

It is an amenable number.

85165167772 is a deficient number, since it is larger than the sum of its proper divisors (63873875836).

85165167772 is a wasteful number, since it uses less digits than its factorization.

85165167772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21291291947 (or 21291291945 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 55.

The spelling of 85165167772 in words is "eighty-five billion, one hundred sixty-five million, one hundred sixty-seven thousand, seven hundred seventy-two".