543121772678541 has 48 divisors (see below), whose sum is σ = 911306697503488. Its totient is φ = 305258576659200.

The previous prime is 543121772678509. The next prime is 543121772678657. The reversal of 543121772678541 is 145876277121345.

543121772678541 is a `hidden beast` number, since 5 + 4 + 3 + 1 + 2 + 17 + 7 + 2 + 6 + 78 + 541 = 666.

It is not a de Polignac number, because 543121772678541 - 2⁵ = 543121772678509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543121772678141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130422105 + ... + 134522001.

Almost surely, 2^{543121772678541} is an apocalyptic number.

It is an amenable number.

543121772678541 is a deficient number, since it is larger than the sum of its proper divisors (368184924824947).

543121772678541 is a wasteful number, since it uses less digits than its factorization.

543121772678541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134442 (or 4134439 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 63.

The spelling of 543121772678541 in words is "five hundred forty-three trillion, one hundred twenty-one billion, seven hundred seventy-two million, six hundred seventy-eight thousand, five hundred forty-one".