85621576512 has 28 divisors (see below), whose sum is σ = 226540421696. Its totient is φ = 28540525440.

The previous prime is 85621576511. The next prime is 85621576519. The reversal of 85621576512 is 21567512658.

It is a super-2 number, since 2×85621576512² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85621576511) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 222972664 + ... + 222973047.

Almost surely, 2^85621576512 is an apocalyptic number.

It is an amenable number.

85621576512 is an abundant number, since it is smaller than the sum of its proper divisors (140918845184).

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

85621576512 is a wasteful number, since it uses less digits than its factorization.

85621576512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445945726 (or 445945716 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The spelling of 85621576512 in words is "eighty-five billion, six hundred twenty-one million, five hundred seventy-six thousand, five hundred twelve".