85621213648 has 20 divisors (see below), whose sum is σ = 165901301280. Its totient is φ = 42807974624.

The previous prime is 85621213631. The next prime is 85621213651. The reversal of 85621213648 is 84631212658.

It is a super-2 number, since 2×85621213648² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85621213598 and 85621213607.

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 in 3 ways as a sum of consecutive naturals, for example, 118611 + ... + 430477.

It is an arithmetic number, because the mean of its divisors is an integer number (8295065064).

Almost surely, 2^85621213648 is an apocalyptic number.

It is an amenable number.

85621213648 is a deficient number, since it is larger than the sum of its proper divisors (80280087632).

85621213648 is a wasteful number, since it uses less digits than its factorization.

85621213648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329034 (or 329028 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The spelling of 85621213648 in words is "eighty-five billion, six hundred twenty-one million, two hundred thirteen thousand, six hundred forty-eight".