64979545001472 has 240 divisors, whose sum is σ = 194383450404000. Its totient is φ = 20871848804352.

The previous prime is 64979545001447. The next prime is 64979545001507. The reversal of 64979545001472 is 27410054597946.

64979545001472 is a `hidden beast` number, since 6 + 4 + 9 + 7 + 9 + 54 + 500 + 1 + 4 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67541029 + ... + 68496347.

It is an arithmetic number, because the mean of its divisors is an integer number (809931043350).

Almost surely, 2^{64979545001472} 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 64979545001472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97191725202000).

64979545001472 is an abundant number, since it is smaller than the sum of its proper divisors (129403905402528).

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

64979545001472 is a wasteful number, since it uses less digits than its factorization.

64979545001472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955881 (or 955862 counting only the distinct ones).

The product of its (nonzero) digits is 76204800, while the sum is 63.

The spelling of 64979545001472 in words is "sixty-four trillion, nine hundred seventy-nine billion, five hundred forty-five million, one thousand, four hundred seventy-two".