66103495236 has 81 divisors (see below), whose sum is σ = 169704377661. Its totient is φ = 21695632704.

The previous prime is 66103495223. The next prime is 66103495243. The reversal of 66103495236 is 63259430166.

The square root of 66103495236 is 257106.

It is a perfect power (a square), and thus also a powerful number.

66103495236 is a `hidden beast` number, since 6 + 610 + 3 + 4 + 9 + 5 + 23 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37523564100 + 28579931136 = 193710^2 + 169056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66103495191 and 66103495200.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112612135 + ... + 112612721.

Almost surely, 2^66103495236 is an apocalyptic number.

66103495236 is the 257106-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66103495236

66103495236 is an abundant number, since it is smaller than the sum of its proper divisors (103600882425).

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

66103495236 is an equidigital number, since it uses as much as digits as its factorization.

66103495236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 66103495236 in words is "sixty-six billion, one hundred three million, four hundred ninety-five thousand, two hundred thirty-six".