985464691680 has 576 divisors, whose sum is σ = 3863497720320. Its totient is φ = 209889792000.

The previous prime is 985464691669. The next prime is 985464691721. The reversal of 985464691680 is 86196464589.

It is a super-2 number, since 2×985464691680² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27241605 + ... + 27277755.

It is an arithmetic number, because the mean of its divisors is an integer number (6707461320).

Almost surely, 2^985464691680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 985464691680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931748860160).

985464691680 is an abundant number, since it is smaller than the sum of its proper divisors (2878033028640).

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

985464691680 is a wasteful number, since it uses less digits than its factorization.

985464691680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36263 (or 36248 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 66.

The spelling of 985464691680 in words is "nine hundred eighty-five billion, four hundred sixty-four million, six hundred ninety-one thousand, six hundred eighty".