85911391156 has 96 divisors (see below), whose sum is σ = 160820352000. Its totient is φ = 40094466048.

The previous prime is 85911391117. The next prime is 85911391157. The reversal of 85911391156 is 65119311958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85911391157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111717940 + ... + 111718708.

It is an arithmetic number, because the mean of its divisors is an integer number (1675212000).

Almost surely, 2^85911391156 is an apocalyptic number.

It is an amenable number.

85911391156 is a deficient number, since it is larger than the sum of its proper divisors (74908960844).

85911391156 is a wasteful number, since it uses less digits than its factorization.

85911391156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1119 counting only the distinct ones).

The product of its digits is 291600, while the sum is 49.

The spelling of 85911391156 in words is "eighty-five billion, nine hundred eleven million, three hundred ninety-one thousand, one hundred fifty-six".