42661316633 has 16 divisors (see below), whose sum is σ = 46638090240. Its totient is φ = 38788315776.

The previous prime is 42661316627. The next prime is 42661316639. The reversal of 42661316633 is 33661316624.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42661316627) and next prime (42661316639).

It is a cyclic number.

It is not a de Polignac number, because 42661316633 - 2¹⁴ = 42661300249 is a prime.

It is a super-2 number, since 2×42661316633² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42661316639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136541 + ... + 322437.

It is an arithmetic number, because the mean of its divisors is an integer number (2914880640).

Almost surely, 2^42661316633 is an apocalyptic number.

It is an amenable number.

42661316633 is a deficient number, since it is larger than the sum of its proper divisors (3976773607).

42661316633 is a wasteful number, since it uses less digits than its factorization.

42661316633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186176.

The product of its digits is 279936, while the sum is 41.

Subtracting from 42661316633 its reverse (33661316624), we obtain a palindrome (9000000009).

The spelling of 42661316633 in words is "forty-two billion, six hundred sixty-one million, three hundred sixteen thousand, six hundred thirty-three".