64683359980 has 12 divisors (see below), whose sum is σ = 135835056000. Its totient is φ = 25873343984.

The previous prime is 64683359941. The next prime is 64683360037. The reversal of 64683359980 is 8995338646.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617083980 + ... + 1617084019.

It is an arithmetic number, because the mean of its divisors is an integer number (11319588000).

Almost surely, 2^64683359980 is an apocalyptic number.

It is an amenable number.

64683359980 is an abundant number, since it is smaller than the sum of its proper divisors (71151696020).

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

64683359980 is a wasteful number, since it uses less digits than its factorization.

64683359980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3234168008 (or 3234168006 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 64683359980 in words is "sixty-four billion, six hundred eighty-three million, three hundred fifty-nine thousand, nine hundred eighty".