64894679049312 has 1584 divisors, whose sum is σ = 241246428902640. Its totient is φ = 17073592252416.

The previous prime is 64894679049271. The next prime is 64894679049329. The reversal of 64894679049312 is 21394097649846.

It is a happy number.

64894679049312 is a `hidden beast` number, since 6 + 4 + 8 + 9 + 46 + 7 + 90 + 493 + 1 + 2 = 666.

It is a super-2 number, since 2×64894679049312² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 263 ways as a sum of consecutive naturals, for example, 65089948398 + ... + 65089949394.

Almost surely, 2^{64894679049312} 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 64894679049312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120623214451320).

64894679049312 is an abundant number, since it is smaller than the sum of its proper divisors (176351749853328).

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

64894679049312 is an equidigital number, since it uses as much as digits as its factorization.

64894679049312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 72.

The spelling of 64894679049312 in words is "sixty-four trillion, eight hundred ninety-four billion, six hundred seventy-nine million, forty-nine thousand, three hundred twelve".