197451366028 has 24 divisors (see below), whose sum is σ = 395025667232. Its totient is φ = 84595670784.

The previous prime is 197451366017. The next prime is 197451366037. The reversal of 197451366028 is 820663154791.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1005951 + ... + 1186102.

It is a 1-persistent number, because it is pandigital, but 2⋅197451366028 = 394902732056 is not.

Almost surely, 2^197451366028 is an apocalyptic number.

It is an amenable number.

197451366028 is an abundant number, since it is smaller than the sum of its proper divisors (197574301204).

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

197451366028 is a wasteful number, since it uses less digits than its factorization.

197451366028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195281 (or 2195279 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 197451366028 in words is "one hundred ninety-seven billion, four hundred fifty-one million, three hundred sixty-six thousand, twenty-eight".