64749035904 has 192 divisors, whose sum is σ = 206970260400. Its totient is φ = 17861652480.

The previous prime is 64749035903. The next prime is 64749035917. The reversal of 64749035904 is 40953094746.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64749035903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 486334 + ... + 604994.

Almost surely, 2^64749035904 is an apocalyptic number.

64749035904 is a gapful number since it is divisible by the number (64) 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 64749035904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103485130200).

64749035904 is an abundant number, since it is smaller than the sum of its proper divisors (142221224496).

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

64749035904 is a wasteful number, since it uses less digits than its factorization.

64749035904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118721 (or 118702 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 51.

The spelling of 64749035904 in words is "sixty-four billion, seven hundred forty-nine million, thirty-five thousand, nine hundred four".