197257640532 has 96 divisors (see below), whose sum is σ = 470153908224. Its totient is φ = 64352025600.

The previous prime is 197257640513. The next prime is 197257640533. The reversal of 197257640532 is 235046752791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197257640533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230171848 + ... + 230172704.

It is an arithmetic number, because the mean of its divisors is an integer number (4897436544).

Almost surely, 2^197257640532 is an apocalyptic number.

197257640532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197257640532 is an abundant number, since it is smaller than the sum of its proper divisors (272896267692).

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

197257640532 is a wasteful number, since it uses less digits than its factorization.

197257640532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 197257640532 in words is "one hundred ninety-seven billion, two hundred fifty-seven million, six hundred forty thousand, five hundred thirty-two".