85039311620 has 24 divisors (see below), whose sum is σ = 178618716864. Its totient is φ = 34008836576.

The previous prime is 85039311607. The next prime is 85039311659. The reversal of 85039311620 is 2611393058.

It is a happy 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 in 7 ways as a sum of consecutive naturals, for example, 328682 + ... + 527361.

It is an arithmetic number, because the mean of its divisors is an integer number (7442446536).

Almost surely, 2^85039311620 is an apocalyptic number.

It is an amenable number.

85039311620 is an abundant number, since it is smaller than the sum of its proper divisors (93579405244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85039311620 is a wasteful number, since it uses less digits than its factorization.

85039311620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861019 (or 861017 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 85039311620 in words is "eighty-five billion, thirty-nine million, three hundred eleven thousand, six hundred twenty".