543742472636639 has 4 divisors (see below), whose sum is σ = 575727323968224. Its totient is φ = 511757621305056.

The previous prime is 543742472636527. The next prime is 543742472636651. The reversal of 543742472636639 is 936636274247345.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 543742472636639 - 2⁸ = 543742472636383 is a prime.

It is a super-2 number, since 2×543742472636639² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543742472666639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15992425665767 + ... + 15992425665800.

It is an arithmetic number, because the mean of its divisors is an integer number (143931830992056).

Almost surely, 2^{543742472636639} is an apocalyptic number.

543742472636639 is a deficient number, since it is larger than the sum of its proper divisors (31984851331585).

543742472636639 is a wasteful number, since it uses less digits than its factorization.

543742472636639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31984851331584.

The product of its digits is 3292047360, while the sum is 71.

The spelling of 543742472636639 in words is "five hundred forty-three trillion, seven hundred forty-two billion, four hundred seventy-two million, six hundred thirty-six thousand, six hundred thirty-nine".