64330529776 has 80 divisors (see below), whose sum is σ = 128740648960. Its totient is φ = 31122766080.

The previous prime is 64330529773. The next prime is 64330529777. The reversal of 64330529776 is 67792503346.

It is a super-2 number, since 2×64330529776² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64330529773) 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, 35133181 + ... + 35135011.

It is an arithmetic number, because the mean of its divisors is an integer number (1609258112).

Almost surely, 2^64330529776 is an apocalyptic number.

It is an amenable number.

64330529776 is an abundant number, since it is smaller than the sum of its proper divisors (64410119184).

64330529776 is a wasteful number, since it uses less digits than its factorization.

64330529776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 52.

The spelling of 64330529776 in words is "sixty-four billion, three hundred thirty million, five hundred twenty-nine thousand, seven hundred seventy-six".