197257640472 has 80 divisors (see below), whose sum is σ = 585004309560. Its totient is φ = 61884746496.

The previous prime is 197257640351. The next prime is 197257640509. The reversal of 197257640472 is 274046752791.

197257640472 is a `hidden beast` number, since 1 + 97 + 25 + 7 + 64 + 0 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8942218 + ... + 8964249.

Almost surely, 2^197257640472 is an apocalyptic number.

197257640472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197257640472 is an abundant number, since it is smaller than the sum of its proper divisors (387746669088).

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

197257640472 is a wasteful number, since it uses less digits than its factorization.

197257640472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17906502 (or 17906489 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 197257640472 in words is "one hundred ninety-seven billion, two hundred fifty-seven million, six hundred forty thousand, four hundred seventy-two".