65677337664 has 56 divisors (see below), whose sum is σ = 174498487680. Its totient is φ = 21800830464.

The previous prime is 65677337647. The next prime is 65677337689. The reversal of 65677337664 is 46673377656.

It is a junction number, because it is equal to n+sod(n) for n = 65677337598 and 65677337607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669739 + ... + 761514.

Almost surely, 2^65677337664 is an apocalyptic number.

65677337664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

65677337664 is an abundant number, since it is smaller than the sum of its proper divisors (108821150016).

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

65677337664 is a wasteful number, since it uses less digits than its factorization.

65677337664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431507 (or 1431497 counting only the distinct ones).

The product of its digits is 80015040, while the sum is 60.

The spelling of 65677337664 in words is "sixty-five billion, six hundred seventy-seven million, three hundred thirty-seven thousand, six hundred sixty-four".