543126621345 has 256 divisors, whose sum is σ = 1170027970560. Its totient is φ = 208225382400.

The previous prime is 543126621299. The next prime is 543126621377.

543126621345 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 543126621345 - 2⁶ = 543126621281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 543126621297 and 543126621306.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 730991044 + ... + 730991786.

It is an arithmetic number, because the mean of its divisors is an integer number (4570421760).

Almost surely, 2^543126621345 is an apocalyptic number.

543126621345 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

543126621345 is an abundant number, since it is smaller than the sum of its proper divisors (626901349215).

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

543126621345 is a wasteful number, since it uses less digits than its factorization.

543126621345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476.

The product of its digits is 518400, while the sum is 42.

The spelling of 543126621345 in words is "five hundred forty-three billion, one hundred twenty-six million, six hundred twenty-one thousand, three hundred forty-five".