32664573540 has 60 divisors (see below), whose sum is σ = 102469982076. Its totient is φ = 8710552512.

The previous prime is 32664573533. The next prime is 32664573541. The reversal of 32664573540 is 4537546623.

32664573540 is a `hidden beast` number, since 3 + 2 + 66 + 45 + 7 + 3 + 540 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10467745344 + 22196828196 = 102312^2 + 148986^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (32664573541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10080039 + ... + 10083278.

Almost surely, 2^32664573540 is an apocalyptic number.

32664573540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32664573540 is an abundant number, since it is smaller than the sum of its proper divisors (69805408536).

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

32664573540 is a wasteful number, since it uses less digits than its factorization.

32664573540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20163338 (or 20163327 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 45.

The spelling of 32664573540 in words is "thirty-two billion, six hundred sixty-four million, five hundred seventy-three thousand, five hundred forty".