197945563530 has 128 divisors (see below), whose sum is σ = 558288412416. Its totient is φ = 44282419200.

The previous prime is 197945563489. The next prime is 197945563531. The reversal of 197945563530 is 35365549791.

197945563530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×197945563530² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (197945563531) 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 63 ways as a sum of consecutive naturals, for example, 26684382 + ... + 26691798.

It is an arithmetic number, because the mean of its divisors is an integer number (4361628222).

Almost surely, 2^197945563530 is an apocalyptic number.

197945563530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197945563530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279144206208).

197945563530 is an abundant number, since it is smaller than the sum of its proper divisors (360342848886).

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

197945563530 is a wasteful number, since it uses less digits than its factorization.

197945563530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13672.

The product of its (nonzero) digits is 15309000, while the sum is 57.

The spelling of 197945563530 in words is "one hundred ninety-seven billion, nine hundred forty-five million, five hundred sixty-three thousand, five hundred thirty".