65902985412 has 72 divisors (see below), whose sum is σ = 170143839936. Its totient is φ = 19838280000.

The previous prime is 65902985387. The next prime is 65902985443. The reversal of 65902985412 is 21458920956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68962 + ... + 369542.

It is an arithmetic number, because the mean of its divisors is an integer number (2363108888).

Almost surely, 2^65902985412 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 65902985412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85071919968).

65902985412 is an abundant number, since it is smaller than the sum of its proper divisors (104240854524).

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

65902985412 is a wasteful number, since it uses less digits than its factorization.

65902985412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300761 (or 300748 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 65902985412 in words is "sixty-five billion, nine hundred two million, nine hundred eighty-five thousand, four hundred twelve".