64972302336 has 192 divisors, whose sum is σ = 192837153600. Its totient is φ = 21615427584.

The previous prime is 64972302331. The next prime is 64972302337. The reversal of 64972302336 is 63320327946.

64972302336 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 2 + 302 + 336 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 64972302291 and 64972302300.

It is not an unprimeable number, because it can be changed into a prime (64972302331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43517206 + ... + 43518698.

It is an arithmetic number, because the mean of its divisors is an integer number (1004360175).

Almost surely, 2^64972302336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64972302336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96418576800).

64972302336 is an abundant number, since it is smaller than the sum of its proper divisors (127864851264).

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

64972302336 is a wasteful number, since it uses less digits than its factorization.

64972302336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311 (or 2285 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 45.

The spelling of 64972302336 in words is "sixty-four billion, nine hundred seventy-two million, three hundred two thousand, three hundred thirty-six".