66136063325 has 24 divisors (see below), whose sum is σ = 82503552768. Its totient is φ = 52590343680.

The previous prime is 66136063309. The next prime is 66136063337. The reversal of 66136063325 is 52336063166.

It is not a de Polignac number, because 66136063325 - 2⁴ = 66136063309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3743162 + ... + 3760788.

It is an arithmetic number, because the mean of its divisors is an integer number (3437648032).

Almost surely, 2^66136063325 is an apocalyptic number.

It is an amenable number.

66136063325 is a deficient number, since it is larger than the sum of its proper divisors (16367489443).

66136063325 is a wasteful number, since it uses less digits than its factorization.

66136063325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18533 (or 18528 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 66136063325 in words is "sixty-six billion, one hundred thirty-six million, sixty-three thousand, three hundred twenty-five".