65506543442 has 8 divisors (see below), whose sum is σ = 99363858300. Its totient is φ = 32385257344.

The previous prime is 65506543439. The next prime is 65506543489. The reversal of 65506543442 is 24434560556.

It is a happy number.

65506543442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47952678361 + 17553865081 = 218981^2 + 132491^2 .

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

It is a super-2 number, since 2×65506543442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65506543393 and 65506543402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184006967 + ... + 184007322.

Almost surely, 2^65506543442 is an apocalyptic number.

65506543442 is a deficient number, since it is larger than the sum of its proper divisors (33857314858).

65506543442 is a wasteful number, since it uses less digits than its factorization.

65506543442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368014380.

The product of its (nonzero) digits is 1728000, while the sum is 44.

The spelling of 65506543442 in words is "sixty-five billion, five hundred six million, five hundred forty-three thousand, four hundred forty-two".