11897481656 has 16 divisors (see below), whose sum is σ = 22309250040. Its totient is φ = 5948348320.

The previous prime is 11897481643. The next prime is 11897481667. The reversal of 11897481656 is 65618479811.

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, 110150 + ... + 189546.

Almost surely, 2^11897481656 is an apocalyptic number.

It is an amenable number.

11897481656 is a deficient number, since it is larger than the sum of its proper divisors (10411768384).

11897481656 is a wasteful number, since it uses less digits than its factorization.

11897481656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98134 (or 98130 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 56.

The spelling of 11897481656 in words is "eleven billion, eight hundred ninety-seven million, four hundred eighty-one thousand, six hundred fifty-six".