97671603506 has 4 divisors (see below), whose sum is σ = 146507405262. Its totient is φ = 48835801752.

The previous prime is 97671603457. The next prime is 97671603517. The reversal of 97671603506 is 60530617679.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95074172281 + 2597431225 = 308341^2 + 50965^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24417900875 + ... + 24417900878.

Almost surely, 2^97671603506 is an apocalyptic number.

97671603506 is a deficient number, since it is larger than the sum of its proper divisors (48835801756).

97671603506 is a wasteful number, since it uses less digits than its factorization.

97671603506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48835801755.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 97671603506 in words is "ninety-seven billion, six hundred seventy-one million, six hundred three thousand, five hundred six".