97221259538316 has 144 divisors (see below), whose sum is σ = 256717313169408. Its totient is φ = 32170661136000.

The previous prime is 97221259538309. The next prime is 97221259538471. The reversal of 97221259538316 is 61383595212279.

97221259538316 is a `hidden beast` number, since 9 + 7 + 2 + 2 + 1 + 2 + 595 + 3 + 8 + 31 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 217145701 + ... + 217592963.

It is an arithmetic number, because the mean of its divisors is an integer number (1782759119232).

Almost surely, 2^{97221259538316} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97221259538316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128358656584704).

97221259538316 is an abundant number, since it is smaller than the sum of its proper divisors (159496053631092).

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

97221259538316 is a wasteful number, since it uses less digits than its factorization.

97221259538316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448914 (or 448900 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 97221259538316 in words is "ninety-seven trillion, two hundred twenty-one billion, two hundred fifty-nine million, five hundred thirty-eight thousand, three hundred sixteen".