543000400245 has 20 divisors (see below), whose sum is σ = 973378495980. Its totient is φ = 289600213248.

The previous prime is 543000400181. The next prime is 543000400247. The reversal of 543000400245 is 542004000345.

It can be written as a sum of positive squares in 2 ways, for example, as 390023981361 + 152976418884 = 624519^2 + 391122^2 .

It is not a de Polignac number, because 543000400245 - 2⁶ = 543000400181 is a prime.

It is a super-3 number, since 3×543000400245³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543000400247) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 670370460 + ... + 670371269.

It is an arithmetic number, because the mean of its divisors is an integer number (48668924799).

Almost surely, 2^543000400245 is an apocalyptic number.

It is an amenable number.

543000400245 is a deficient number, since it is larger than the sum of its proper divisors (430378095735).

543000400245 is a wasteful number, since it uses less digits than its factorization.

543000400245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340741746 (or 1340741737 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 543000400245 in words is "five hundred forty-three billion, four hundred thousand, two hundred forty-five".