545161183231868 has 72 divisors (see below), whose sum is σ = 1139862199469280. Its totient is φ = 223467830087040.

The previous prime is 545161183231853. The next prime is 545161183231877. The reversal of 545161183231868 is 868132381161545.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 545161183231868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230319278 + ... + 232674218.

Almost surely, 2^{545161183231868} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545161183231868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569931099734640).

545161183231868 is an abundant number, since it is smaller than the sum of its proper divisors (594701016237412).

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

545161183231868 is a wasteful number, since it uses less digits than its factorization.

545161183231868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370627 (or 2370602 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 62.

The spelling of 545161183231868 in words is "five hundred forty-five trillion, one hundred sixty-one billion, one hundred eighty-three million, two hundred thirty-one thousand, eight hundred sixty-eight".