543958912961 has 4 divisors (see below), whose sum is σ = 544214175024. Its totient is φ = 543703650900.

The previous prime is 543958912951. The next prime is 543958912999. The reversal of 543958912961 is 169219859345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-543958912961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 543958912894 and 543958912903.

It is not an unprimeable number, because it can be changed into a prime (543958912951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127627835 + ... + 127632096.

It is an arithmetic number, because the mean of its divisors is an integer number (136053543756).

Almost surely, 2^543958912961 is an apocalyptic number.

It is an amenable number.

543958912961 is a deficient number, since it is larger than the sum of its proper divisors (255262063).

543958912961 is a wasteful number, since it uses less digits than its factorization.

543958912961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255262062.

The product of its digits is 20995200, while the sum is 62.

The spelling of 543958912961 in words is "five hundred forty-three billion, nine hundred fifty-eight million, nine hundred twelve thousand, nine hundred sixty-one".