66635125332 has 48 divisors (see below), whose sum is σ = 162758098944. Its totient is φ = 21192444000.

The previous prime is 66635125331. The next prime is 66635125351. The reversal of 66635125332 is 23352153666.

It is a super-2 number, since 2×66635125332² (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 (66635125331) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1235044 + ... + 1287867.

It is an arithmetic number, because the mean of its divisors is an integer number (3390793728).

Almost surely, 2^66635125332 is an apocalyptic number.

66635125332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66635125332 is an abundant number, since it is smaller than the sum of its proper divisors (96122973612).

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

66635125332 is a wasteful number, since it uses less digits than its factorization.

66635125332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523020 (or 2523018 counting only the distinct ones).

The product of its digits is 583200, while the sum is 42.

Adding to 66635125332 its reverse (23352153666), we get a palindrome (89987278998).

The spelling of 66635125332 in words is "sixty-six billion, six hundred thirty-five million, one hundred twenty-five thousand, three hundred thirty-two".