64965433463040 has 288 divisors, whose sum is σ = 238258398873600. Its totient is φ = 14920290754560.

The previous prime is 64965433463009. The next prime is 64965433463087. The reversal of 64965433463040 is 4036433456946.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39671320 + ... + 41276439.

It is an arithmetic number, because the mean of its divisors is an integer number (827286107200).

Almost surely, 2^{64965433463040} is an apocalyptic number.

64965433463040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64965433463040 is an abundant number, since it is smaller than the sum of its proper divisors (173292965410560).

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

64965433463040 is a wasteful number, since it uses less digits than its factorization.

64965433463040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80947813 (or 80947799 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 57.

The spelling of 64965433463040 in words is "sixty-four trillion, nine hundred sixty-five billion, four hundred thirty-three million, four hundred sixty-three thousand, forty".