66125608202 has 8 divisors (see below), whose sum is σ = 99191756196. Its totient is φ = 33061689472.

The previous prime is 66125608147. The next prime is 66125608217. The reversal of 66125608202 is 20280652166.

66125608202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 257149²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 66125608201 + 1 = 257149^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 481073 + ... + 603060.

Almost surely, 2^66125608202 is an apocalyptic number.

66125608202 is a deficient number, since it is larger than the sum of its proper divisors (33066147994).

66125608202 is a wasteful number, since it uses less digits than its factorization.

66125608202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114632.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 66125608202 in words is "sixty-six billion, one hundred twenty-five million, six hundred eight thousand, two hundred two".