64757876080 has 80 divisors (see below), whose sum is σ = 153751989600. Its totient is φ = 25358008320.

The previous prime is 64757876047. The next prime is 64757876087. The reversal of 64757876080 is 8067875746.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64757876087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109056 + ... + 1165984.

It is an arithmetic number, because the mean of its divisors is an integer number (1921899870).

Almost surely, 2^64757876080 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 64757876080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76875994800).

64757876080 is an abundant number, since it is smaller than the sum of its proper divisors (88994113520).

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

64757876080 is a wasteful number, since it uses less digits than its factorization.

64757876080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57242 (or 57236 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 64757876080 in words is "sixty-four billion, seven hundred fifty-seven million, eight hundred seventy-six thousand, eighty".