97858319091 has 16 divisors (see below), whose sum is σ = 140554955520. Its totient is φ = 60203170080.

The previous prime is 97858319081. The next prime is 97858319123. The reversal of 97858319091 is 19091385879.

It is not a de Polignac number, because 97858319091 - 2⁵ = 97858319059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97858319081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223231 + ... + 495528.

It is an arithmetic number, because the mean of its divisors is an integer number (8784684720).

Almost surely, 2^97858319091 is an apocalyptic number.

97858319091 is a deficient number, since it is larger than the sum of its proper divisors (42696636429).

97858319091 is a wasteful number, since it uses less digits than its factorization.

97858319091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722266.

The product of its (nonzero) digits is 4898880, while the sum is 60.

The spelling of 97858319091 in words is "ninety-seven billion, eight hundred fifty-eight million, three hundred nineteen thousand, ninety-one".