198545401503 has 64 divisors (see below), whose sum is σ = 313923962880. Its totient is φ = 123742105344.

The previous prime is 198545401451. The next prime is 198545401519. The reversal of 198545401503 is 305104545891.

It is a happy number.

198545401503 is a `hidden beast` number, since 1 + 9 + 8 + 54 + 540 + 1 + 50 + 3 = 666.

It is not a de Polignac number, because 198545401503 - 2²⁵ = 198511847071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198545401543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8644651 + ... + 8667587.

It is an arithmetic number, because the mean of its divisors is an integer number (4905061920).

Almost surely, 2^198545401503 is an apocalyptic number.

198545401503 is a deficient number, since it is larger than the sum of its proper divisors (115378561377).

198545401503 is a wasteful number, since it uses less digits than its factorization.

198545401503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23285 (or 23279 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 198545401503 in words is "one hundred ninety-eight billion, five hundred forty-five million, four hundred one thousand, five hundred three".