64755102720 has 352 divisors, whose sum is σ = 258226200576. Its totient is φ = 13455360000.

The previous prime is 64755102701. The next prime is 64755102739. The reversal of 64755102720 is 2720155746.

It is an interprime number because it is at equal distance from previous prime (64755102701) and next prime (64755102739).

It is a tau number, because it is divible by the number of its divisors (352).

It is a congruent number.

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, 1155345 + ... + 1210095.

Almost surely, 2^64755102720 is an apocalyptic number.

64755102720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64755102720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129113100288).

64755102720 is an abundant number, since it is smaller than the sum of its proper divisors (193471097856).

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

64755102720 is a wasteful number, since it uses less digits than its factorization.

64755102720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54797 (or 54779 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 39.

The spelling of 64755102720 in words is "sixty-four billion, seven hundred fifty-five million, one hundred two thousand, seven hundred twenty".