985642023660 has 288 divisors, whose sum is σ = 3270071927808. Its totient is φ = 221124879360.

The previous prime is 985642023647. The next prime is 985642023697. The reversal of 985642023660 is 66320246589.

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, 55342477 + ... + 55360283.

It is an arithmetic number, because the mean of its divisors is an integer number (11354416416).

Almost surely, 2^985642023660 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 985642023660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1635035963904).

985642023660 is an abundant number, since it is smaller than the sum of its proper divisors (2284429904148).

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

985642023660 is a wasteful number, since it uses less digits than its factorization.

985642023660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18181 (or 18172 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 985642023660 in words is "nine hundred eighty-five billion, six hundred forty-two million, twenty-three thousand, six hundred sixty".