64769543532 has 36 divisors (see below), whose sum is σ = 166028977296. Its totient is φ = 21285764640.

The previous prime is 64769543497. The next prime is 64769543543. The reversal of 64769543532 is 23534596746.

64769543532 is a `hidden beast` number, since 6 + 4 + 7 + 69 + 5 + 43 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12667543 + ... + 12672654.

It is an arithmetic number, because the mean of its divisors is an integer number (4611916036).

Almost surely, 2^64769543532 is an apocalyptic number.

It is an amenable number.

64769543532 is an abundant number, since it is smaller than the sum of its proper divisors (101259433764).

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

64769543532 is a wasteful number, since it uses less digits than its factorization.

64769543532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25340278 (or 25340273 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 54.

The spelling of 64769543532 in words is "sixty-four billion, seven hundred sixty-nine million, five hundred forty-three thousand, five hundred thirty-two".