97444261691 has 8 divisors (see below), whose sum is σ = 112031727360. Its totient is φ = 83023510248.

The previous prime is 97444261643. The next prime is 97444261699. The reversal of 97444261691 is 19616244479.

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

It is not a de Polignac number, because 97444261691 - 2¹⁸ = 97443999547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97444261699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41677301 + ... + 41679638.

It is an arithmetic number, because the mean of its divisors is an integer number (14003965920).

Almost surely, 2^97444261691 is an apocalyptic number.

97444261691 is a deficient number, since it is larger than the sum of its proper divisors (14587465669).

97444261691 is a wasteful number, since it uses less digits than its factorization.

97444261691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83357113.

The product of its digits is 2612736, while the sum is 53.

The spelling of 97444261691 in words is "ninety-seven billion, four hundred forty-four million, two hundred sixty-one thousand, six hundred ninety-one".