198451065597 has 16 divisors (see below), whose sum is σ = 278365032000. Its totient is φ = 125573552384.

The previous prime is 198451065583. The next prime is 198451065607. The reversal of 198451065597 is 795560154891.

It is a happy number.

It is not a de Polignac number, because 198451065597 - 2⁸ = 198451065341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198451065597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198451065497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19325772 + ... + 19336037.

It is an arithmetic number, because the mean of its divisors is an integer number (17397814500).

Almost surely, 2^198451065597 is an apocalyptic number.

It is an amenable number.

198451065597 is a deficient number, since it is larger than the sum of its proper divisors (79913966403).

198451065597 is a wasteful number, since it uses less digits than its factorization.

198451065597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38661900.

The product of its (nonzero) digits is 13608000, while the sum is 60.

The spelling of 198451065597 in words is "one hundred ninety-eight billion, four hundred fifty-one million, sixty-five thousand, five hundred ninety-seven".