65855843004 has 72 divisors (see below), whose sum is σ = 178789250640. Its totient is φ = 18811989504.

The previous prime is 65855842967. The next prime is 65855843021. The reversal of 65855843004 is 40034855856.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 3858762 + ... + 3875790.

Almost surely, 2^65855843004 is an apocalyptic number.

It is an amenable number.

65855843004 is an abundant number, since it is smaller than the sum of its proper divisors (112933407636).

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

65855843004 is a wasteful number, since it uses less digits than its factorization.

65855843004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23627 (or 23618 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 65855843004 in words is "sixty-five billion, eight hundred fifty-five million, eight hundred forty-three thousand, four".