45543601998 has 32 divisors (see below), whose sum is σ = 101737912320. Its totient is φ = 15101714520.

The previous prime is 45543601997. The next prime is 45543602003. The reversal of 45543601998 is 89910634554.

45543601998 is a `hidden beast` number, since 4 + 5 + 543 + 6 + 0 + 1 + 9 + 98 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45543601997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2197540 + ... + 2218167.

It is an arithmetic number, because the mean of its divisors is an integer number (3179309760).

Almost surely, 2^45543601998 is an apocalyptic number.

45543601998 is an abundant number, since it is smaller than the sum of its proper divisors (56194310322).

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

45543601998 is a wasteful number, since it uses less digits than its factorization.

45543601998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415909 (or 4415903 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 45543601998 in words is "forty-five billion, five hundred forty-three million, six hundred one thousand, nine hundred ninety-eight".