198025975616 has 56 divisors (see below), whose sum is σ = 450842335296. Its totient is φ = 84537999360.

The previous prime is 198025975597. The next prime is 198025975619. The reversal of 198025975616 is 616579520891.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198025975619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 744830 + ... + 975101.

Almost surely, 2^198025975616 is an apocalyptic number.

198025975616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198025975616 is an abundant number, since it is smaller than the sum of its proper divisors (252816359680).

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

198025975616 is a wasteful number, since it uses less digits than its factorization.

198025975616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720207 (or 1720197 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 198025975616 in words is "one hundred ninety-eight billion, twenty-five million, nine hundred seventy-five thousand, six hundred sixteen".