66246328436 has 12 divisors (see below), whose sum is σ = 116123975940. Its totient is φ = 33068049600.

The previous prime is 66246328361. The next prime is 66246328453. The reversal of 66246328436 is 63482364266.

66246328436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47526616036 + 18719712400 = 218006^2 + 136820^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13775951 + ... + 13780758.

It is an arithmetic number, because the mean of its divisors is an integer number (9676997995).

Almost surely, 2^66246328436 is an apocalyptic number.

It is an amenable number.

66246328436 is a deficient number, since it is larger than the sum of its proper divisors (49877647504).

66246328436 is a wasteful number, since it uses less digits than its factorization.

66246328436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27557314 (or 27557312 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 50.

The spelling of 66246328436 in words is "sixty-six billion, two hundred forty-six million, three hundred twenty-eight thousand, four hundred thirty-six".