65689337980 has 24 divisors (see below), whose sum is σ = 157654411488. Its totient is φ = 22522058688.

The previous prime is 65689337971. The next prime is 65689337999. The reversal of 65689337980 is 8973398656.

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 7 ways as a sum of consecutive naturals, for example, 234604639 + ... + 234604918.

It is an arithmetic number, because the mean of its divisors is an integer number (6568933812).

Almost surely, 2^65689337980 is an apocalyptic number.

It is an amenable number.

65689337980 is an abundant number, since it is smaller than the sum of its proper divisors (91965073508).

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

65689337980 is a wasteful number, since it uses less digits than its factorization.

65689337980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469209573 (or 469209571 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 65689337980 in words is "sixty-five billion, six hundred eighty-nine million, three hundred thirty-seven thousand, nine hundred eighty".