66254400032 has 24 divisors (see below), whose sum is σ = 130444673436. Its totient is φ = 33125594112.

The previous prime is 66254400019. The next prime is 66254400061. The reversal of 66254400032 is 23000445266.

It can be written as a sum of positive squares in 2 ways, for example, as 63845160976 + 2409239056 = 252676^2 + 49084^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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 3 ways as a sum of consecutive naturals, for example, 892868 + ... + 964220.

Almost surely, 2^66254400032 is an apocalyptic number.

It is an amenable number.

66254400032 is a deficient number, since it is larger than the sum of its proper divisors (64190273404).

66254400032 is a wasteful number, since it uses less digits than its factorization.

66254400032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100380 (or 100372 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 66254400032 its reverse (23000445266), we get a palindrome (89254845298).

The spelling of 66254400032 in words is "sixty-six billion, two hundred fifty-four million, four hundred thousand, thirty-two".