64934819600 has 180 divisors, whose sum is σ = 187332081408. Its totient is φ = 21544992000.

The previous prime is 64934819591. The next prime is 64934819603. The reversal of 64934819600 is 691843946.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (64934819603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 554165 + ... + 661035.

Almost surely, 2^64934819600 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 64934819600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93666040704).

64934819600 is an abundant number, since it is smaller than the sum of its proper divisors (122397261808).

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

64934819600 is a wasteful number, since it uses less digits than its factorization.

64934819600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106934 (or 106916 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 64934819600 in words is "sixty-four billion, nine hundred thirty-four million, eight hundred nineteen thousand, six hundred".