197159161388 has 96 divisors (see below), whose sum is σ = 421478400000. Its totient is φ = 78875596800.

The previous prime is 197159161379. The next prime is 197159161403. The reversal of 197159161388 is 883161951791.

197159161388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31436693 + ... + 31442963.

It is an arithmetic number, because the mean of its divisors is an integer number (4390400000).

Almost surely, 2^197159161388 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 197159161388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210739200000).

197159161388 is an abundant number, since it is smaller than the sum of its proper divisors (224319238612).

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

197159161388 is a wasteful number, since it uses less digits than its factorization.

197159161388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591 (or 7589 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 59.

The spelling of 197159161388 in words is "one hundred ninety-seven billion, one hundred fifty-nine million, one hundred sixty-one thousand, three hundred eighty-eight".