197422851648 has 112 divisors (see below), whose sum is σ = 570170974464. Its totient is φ = 59789744640.

The previous prime is 197422851643. The next prime is 197422851671. The reversal of 197422851648 is 846158224791.

197422851648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (197422851641) 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 15 ways as a sum of consecutive naturals, for example, 3662911 + ... + 3716417.

It is an arithmetic number, because the mean of its divisors is an integer number (5090812272).

Almost surely, 2^197422851648 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 197422851648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285085487232).

197422851648 is an abundant number, since it is smaller than the sum of its proper divisors (372748122816).

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

197422851648 is a wasteful number, since it uses less digits than its factorization.

197422851648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55280 (or 55270 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 57.

The spelling of 197422851648 in words is "one hundred ninety-seven billion, four hundred twenty-two million, eight hundred fifty-one thousand, six hundred forty-eight".