97491221445909 has 8 divisors (see below), whose sum is σ = 130010703196032. Its totient is φ = 64982943663200.

The previous prime is 97491221445881. The next prime is 97491221445931. The reversal of 97491221445909 is 90954412219479.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97491221445909 - 2¹² = 97491221441813 is a prime.

It is a super-2 number, since 2×97491221445909² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97491221445909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97491221445979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2800971549 + ... + 2801006354.

It is an arithmetic number, because the mean of its divisors is an integer number (16251337899504).

Almost surely, 2^{97491221445909} is an apocalyptic number.

It is an amenable number.

97491221445909 is a deficient number, since it is larger than the sum of its proper divisors (32519481750123).

97491221445909 is a wasteful number, since it uses less digits than its factorization.

97491221445909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5601983707.

The product of its (nonzero) digits is 58786560, while the sum is 66.

The spelling of 97491221445909 in words is "ninety-seven trillion, four hundred ninety-one billion, two hundred twenty-one million, four hundred forty-five thousand, nine hundred nine".