65837320668 has 72 divisors (see below), whose sum is σ = 197241046912. Its totient is φ = 18810661104.

The previous prime is 65837320657. The next prime is 65837320687. The reversal of 65837320668 is 86602373856.

65837320668 is a `hidden beast` number, since 6 + 5 + 8 + 373 + 206 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4831330 + ... + 4844937.

Almost surely, 2^65837320668 is an apocalyptic number.

It is an amenable number.

65837320668 is an abundant number, since it is smaller than the sum of its proper divisors (131403726244).

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

65837320668 is a wasteful number, since it uses less digits than its factorization.

65837320668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9676293 (or 9676279 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 65837320668 in words is "sixty-five billion, eight hundred thirty-seven million, three hundred twenty thousand, six hundred sixty-eight".