971603387208 has 48 divisors (see below), whose sum is σ = 2786215599180. Its totient is φ = 304816748544.

The previous prime is 971603387207. The next prime is 971603387267. The reversal of 971603387208 is 802783306179.

971603387208 is a `hidden beast` number, since 9 + 7 + 1 + 603 + 3 + 8 + 7 + 20 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 938414563524 + 33188823684 = 968718^2 + 182178^2 .

It is not an unprimeable number, because it can be changed into a prime (971603387207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396895585 + ... + 396898032.

Almost surely, 2^971603387208 is an apocalyptic number.

It is an amenable number.

971603387208 is an abundant number, since it is smaller than the sum of its proper divisors (1814612211972).

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

971603387208 is a wasteful number, since it uses less digits than its factorization.

971603387208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793793646 (or 793793639 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 971603387208 in words is "nine hundred seventy-one billion, six hundred three million, three hundred eighty-seven thousand, two hundred eight".