542613665531 has 8 divisors (see below), whose sum is σ = 620303007744. Its totient is φ = 464967599400.

The previous prime is 542613665513. The next prime is 542613665567. The reversal of 542613665531 is 135566316245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542613665531 is a prime.

It is a super-2 number, since 2×542613665531² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (542613665501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10792145 + ... + 10842306.

It is an arithmetic number, because the mean of its divisors is an integer number (77537875968).

Almost surely, 2^542613665531 is an apocalyptic number.

542613665531 is a deficient number, since it is larger than the sum of its proper divisors (77689342213).

542613665531 is a wasteful number, since it uses less digits than its factorization.

542613665531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21638041.

The product of its digits is 1944000, while the sum is 47.

The spelling of 542613665531 in words is "five hundred forty-two billion, six hundred thirteen million, six hundred sixty-five thousand, five hundred thirty-one".