97091999445 has 64 divisors (see below), whose sum is σ = 188475310080. Its totient is φ = 41664672768.

The previous prime is 97091999423. The next prime is 97091999453. The reversal of 97091999445 is 54499919079.

It is not a de Polignac number, because 97091999445 - 2¹¹ = 97091997397 is a prime.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 612646 + ... + 754664.

It is an arithmetic number, because the mean of its divisors is an integer number (2944926720).

Almost surely, 2^97091999445 is an apocalyptic number.

It is an amenable number.

97091999445 is a deficient number, since it is larger than the sum of its proper divisors (91383310635).

97091999445 is a wasteful number, since it uses less digits than its factorization.

97091999445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142434.

The product of its (nonzero) digits is 33067440, while the sum is 66.

The spelling of 97091999445 in words is "ninety-seven billion, ninety-one million, nine hundred ninety-nine thousand, four hundred forty-five".