97656521456 has 20 divisors (see below), whose sum is σ = 203764088472. Its totient is φ = 45072240576.

The previous prime is 97656521449. The next prime is 97656521527. The reversal of 97656521456 is 65412565679.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234751046 + ... + 234751461.

Almost surely, 2^97656521456 is an apocalyptic number.

It is an amenable number.

97656521456 is an abundant number, since it is smaller than the sum of its proper divisors (106107567016).

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

97656521456 is a wasteful number, since it uses less digits than its factorization.

97656521456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469502528 (or 469502522 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 56.

The spelling of 97656521456 in words is "ninety-seven billion, six hundred fifty-six million, five hundred twenty-one thousand, four hundred fifty-six".